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mw-first-heading"><span class="mw-page-title-main">Survey of India</span></h1> <div class="tagline"></div> </div> <ul id="p-associated-pages" class="minerva__tab-container"> <li class="minerva__tab selected mw-list-item"> <a class="minerva__tab-text" href="/wiki/Survey_of_India" rel="" data-event-name="tabs.main">Article</a> </li> <li class="minerva__tab mw-list-item"> <a class="minerva__tab-text" href="/wiki/Talk:Survey_of_India" rel="discussion" data-event-name="tabs.talk">Talk</a> </li> </ul> <nav class="page-actions-menu"> <ul id="p-views" class="page-actions-menu__list"> <li id="language-selector" class="page-actions-menu__list-item"> <a role="button" href="#p-lang" data-mw="interface" data-event-name="menu.languages" title="Language" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet language-selector"> <span class="minerva-icon minerva-icon--language"></span> <span>Language</span> </a> </li> <li id="page-actions-watch" class="page-actions-menu__list-item"> <a role="button" id="ca-watch" href="/w/index.php?title=Special:UserLogin&returnto=Survey+of+India" data-event-name="menu.watch" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet menu__item--page-actions-watch"> <span class="minerva-icon minerva-icon--star"></span> <span>Watch</span> </a> </li> <li id="page-actions-edit" class="page-actions-menu__list-item"> <a role="button" id="ca-edit" href="/w/index.php?title=Survey_of_India&action=edit" data-event-name="menu.edit" data-mw="interface" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet edit-page menu__item--page-actions-edit"> <span class="minerva-icon minerva-icon--edit"></span> <span>Edit</span> </a> </li> </ul> </nav>  <div id="mw-content-subtitle"></div> </div> <div id="bodyContent" class="content"> <div id="mw-content-text" class="mw-body-content"><script>function mfTempOpenSection(id){var block=document.getElementById("mf-section-"+id);block.className+=" open-block";block.previousSibling.className+=" open-block";}</script><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><section class="mf-section-0" id="mf-section-0"> <p class="mw-empty-elt"> </p> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><p>The <b>Survey of India</b> is <a href="/wiki/India" title="India">India</a>'s central engineering agency in charge of <a href="/wiki/Cartography" title="Cartography">mapping</a> and <a href="/wiki/Surveying" title="Surveying">surveying</a>.<sup id="cite_ref-si1_3-0" class="reference"><a href="#cite_note-si1-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> Set up in 1767<sup id="cite_ref-si2_4-0" class="reference"><a href="#cite_note-si2-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> to help consolidate the territories of the <a href="/wiki/British_East_India_Company" class="mw-redirect" title="British East India Company">British East India Company</a>, it is one of the oldest Engineering Departments of the <a href="/wiki/Government_of_India" title="Government of India">Government of India</a>. Its members are from <a href="/wiki/Survey_of_India_Service" title="Survey of India Service">Survey of India Service</a> cadre of <a href="/wiki/Civil_Services_of_India" title="Civil Services of India">Civil Services of India</a>. It is headed by the <a href="/wiki/Surveyor_General_of_India" title="Surveyor General of India">Surveyor General of India</a>. At present, the Surveyor General is Hitesh Kumar S. Makwana. </p><table class="infobox"><caption class="infobox-title" style="font-size: 125%;">Survey of India</caption><tbody><tr><td colspan="2" class="infobox-image"><span typeof="mw:File"><a href="/wiki/File:Survey_of_India_logo.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/en/thumb/b/ba/Survey_of_India_logo.jpg/125px-Survey_of_India_logo.jpg" decoding="async" width="125" height="177" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/b/ba/Survey_of_India_logo.jpg/188px-Survey_of_India_logo.jpg 1.5x, //upload.wikimedia.org/wikipedia/en/b/ba/Survey_of_India_logo.jpg 2x" data-file-width="189" data-file-height="267"></a></span></td></tr><tr><th colspan="2" class="infobox-header" style="background-color: #efefef">Survey and mapping agency overview</th></tr><tr><th scope="row" class="infobox-label">Formed</th><td class="infobox-data">1767<span class="noprint">; 258 years ago</span><span style="display:none"> (<span class="bday dtstart published updated">1767</span>)</span><sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label">Jurisdiction</th><td class="infobox-data"><a href="/wiki/Government_of_India" title="Government of India">Government of India</a></td></tr><tr><th scope="row" class="infobox-label">Headquarters</th><td class="infobox-data">Hathibarkala Estate, New Cantt Road, <a href="/wiki/Dehradun" title="Dehradun">Dehradun</a>, <a href="/wiki/Uttarakhand" title="Uttarakhand">Uttarakhand</a>, India<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label">Minister responsible</th><td class="infobox-data"><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style><div class="plainlist"><ul><li style="text-indent: -1em; padding-left: 1em;"><a href="/wiki/Jitendra_Singh_(politician,_born_1956)" class="mw-redirect" title="Jitendra Singh (politician, born 1956)">Dr Jitendra Singh</a>, <a href="/wiki/Minister_of_Science_and_Technology_(India)" class="mw-redirect" title="Minister of Science and Technology (India)">Minister of Science and Technology</a></li></ul></div></td></tr><tr><th scope="row" class="infobox-label">Survey and mapping agency executive</th><td class="infobox-data"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1126788409"><div class="plainlist"><ul><li style="text-indent: -1em; padding-left: 1em;">Hitesh Kumar S Makwana, <a href="/wiki/Surveyor_General_of_India" title="Surveyor General of India">Surveyor General of India</a></li></ul></div></td></tr><tr><th scope="row" class="infobox-label">Parent department</th><td class="infobox-data"><a href="/wiki/Department_of_Science_and_Technology_(India)" title="Department of Science and Technology (India)">Department of Science and Technology</a></td></tr><tr><th scope="row" class="infobox-label">Website</th><td class="infobox-data"><span class="url"><a rel="nofollow" class="external text" href="http://surveyofindia.gov.in">surveyofindia<wbr></wbr>.gov<wbr></wbr>.in</a></span></td></tr></tbody></table> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Index_chart_of_the_Great_Trigonometrical_Survey_of_India.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/47/Index_chart_of_the_Great_Trigonometrical_Survey_of_India.jpg/220px-Index_chart_of_the_Great_Trigonometrical_Survey_of_India.jpg" decoding="async" width="220" height="218" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/47/Index_chart_of_the_Great_Trigonometrical_Survey_of_India.jpg/330px-Index_chart_of_the_Great_Trigonometrical_Survey_of_India.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/47/Index_chart_of_the_Great_Trigonometrical_Survey_of_India.jpg/440px-Index_chart_of_the_Great_Trigonometrical_Survey_of_India.jpg 2x" data-file-width="8413" data-file-height="8344"></a><figcaption>A map showing the triangles and transects used in the <a href="/wiki/Great_Trigonometrical_Survey" title="Great Trigonometrical Survey">Great Trigonometrical Survey</a> (1802–1852), produced in 1870.</figcaption></figure> <figure typeof="mw:File/Thumb"><a href="/wiki/File:GeorgeEverest.jpeg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/f/fd/GeorgeEverest.jpeg" decoding="async" width="190" height="233" class="mw-file-element" data-file-width="190" data-file-height="233"></a><figcaption>Surveyor-General of India <a href="/wiki/George_Everest" title="George Everest">George Everest</a> (b.1790-d.1866) under whom <a href="/wiki/Great_Trigonometrical_Survey" title="Great Trigonometrical Survey">GTS</a> was completed and <a href="/wiki/Mount_Everest" title="Mount Everest">Mount Everest</a> was named in his honour.</figcaption></figure> <div id="toc" class="toc" role="navigation" aria-labelledby="mw-toc-heading"><input type="checkbox" role="button" id="toctogglecheckbox" class="toctogglecheckbox" style="display:none"><div class="toctitle" lang="en" dir="ltr"><h2 id="mw-toc-heading">Contents</h2><span class="toctogglespan"><label class="toctogglelabel" for="toctogglecheckbox"></label></span></div> <ul> <li class="toclevel-1 tocsection-1"><a href="#History"><span class="tocnumber">1</span> <span class="toctext">History</span></a></li> <li class="toclevel-1 tocsection-2"><a href="#Organisation"><span class="tocnumber">2</span> <span class="toctext">Organisation</span></a></li> <li class="toclevel-1 tocsection-3"><a href="#Responsibilities"><span class="tocnumber">3</span> <span class="toctext">Responsibilities</span></a></li> <li class="toclevel-1 tocsection-4"><a href="#Maps"><span class="tocnumber">4</span> <span class="toctext">Maps</span></a></li> <li class="toclevel-1 tocsection-5"><a href="#Gallery"><span class="tocnumber">5</span> <span class="toctext">Gallery</span></a></li> <li class="toclevel-1 tocsection-6"><a href="#See_also"><span class="tocnumber">6</span> <span class="toctext">See also</span></a></li> <li class="toclevel-1 tocsection-7"><a href="#References"><span class="tocnumber">7</span> <span class="toctext">References</span></a></li> <li class="toclevel-1 tocsection-8"><a href="#Further_reading"><span class="tocnumber">8</span> <span class="toctext">Further reading</span></a></li> <li class="toclevel-1 tocsection-9"><a href="#External_links"><span class="tocnumber">9</span> <span class="toctext">External links</span></a></li> </ul> </div> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(1)"><span class="indicator mf-icon mf-icon-expand mf-icon--small"></span><h2 id="History">History</h2><span class="mw-editsection"> <a role="button" href="/w/index.php?title=Survey_of_India&action=edit&section=1" title="Edit section: History" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> <span class="minerva-icon minerva-icon--edit"></span> <span>edit</span> </a> </span> </div><section class="mf-section-1 collapsible-block" id="mf-section-1"> <p>The history of the Survey of India dates back to the 18th century.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> "First modern scientific survey of India" was undertaken by John Mather in 1793–96 on instructions of Superintendent of Salem and Baramahal, Col. Alexander Read. The present <a href="/wiki/Dharmapuri_district" title="Dharmapuri district">Dharmapuri district</a>, <a href="/wiki/Krishnagiri_district" title="Krishnagiri district">Krishnagiri district</a> and <a href="/wiki/North_Arcot" title="North Arcot">North Arcot</a> in western <a href="/wiki/Tamil_Nadu" title="Tamil Nadu">Tamil Nadu</a> were then called Baramahal.<sup id="cite_ref-si3_6-0" class="reference"><a href="#cite_note-si3-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p><p>The <a href="/wiki/Great_Trigonometrical_Survey" title="Great Trigonometrical Survey">Great Trigonometrical Survey</a> (1802–1852) was started by British surveyor Col. <a href="/wiki/William_Lambton" title="William Lambton">William Lambton</a> on 10 April 1802, heading from <a href="/wiki/St._Thomas_Mount" class="mw-redirect" title="St. Thomas Mount">St. Thomas Mount</a> in <a href="/wiki/Chennai" title="Chennai">Chennai</a> to the <a href="/wiki/Indian_Himalayan_Region" title="Indian Himalayan Region">foothills of the Himalayas</a>.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (February 2023)">citation needed</span></a></i>]</sup> 36 inch huge half ton weight <a href="/wiki/Theodolite" title="Theodolite">Theodolite</a> was used, which took 57 days to measure the 12-km base line. This 5-decade project was completed under Survey General <a href="/wiki/George_Everest" title="George Everest">Lt. George Everest</a> in the year 1852. Pioneering mathematician and Surveyor <a href="/wiki/Radhanath_Sikdar" title="Radhanath Sikdar">Radhanath Sikdar</a> measured <a href="/wiki/Mount_Everest" title="Mount Everest">Mount Everest</a> in 1852, with a height of 29,002 feet. Modern measurements indicate the height is 29,037 feet. This is regarded as the beginning of a new age of systematic topographical mapping in India succeeding the classical age, and the founding of one of the oldest survey and mapping agencies in the world. </p> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(2)"><span class="indicator mf-icon mf-icon-expand mf-icon--small"></span><h2 id="Organisation">Organisation</h2><span class="mw-editsection"> <a role="button" href="/w/index.php?title=Survey_of_India&action=edit&section=2" title="Edit section: Organisation" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> <span class="minerva-icon minerva-icon--edit"></span> <span>edit</span> </a> </span> </div><section class="mf-section-2 collapsible-block" id="mf-section-2"> <p>The Survey of India, headquartered at <a href="/wiki/Dehradun" title="Dehradun">Dehradun</a>, <a href="/wiki/Uttarakhand" title="Uttarakhand">Uttarakhand</a>, has 18 geospatial divisions ranging from the prediction of <a href="/wiki/Tide" title="Tide">tides</a> to <a href="/wiki/Aerial_survey" title="Aerial survey">aerial survey</a>. It has 23 Geo-spatial Data Centers spread across India, each catering to the respective administrative area. Surveyors are the backbone of Survey of India. Appointments to Group 'A' Civil Stream posts in the Junior Time Scale (Dy Supdtg Surveyor) in Survey of India are made on the basis of competitive <a href="/wiki/Indian_Engineering_Services" class="mw-redirect" title="Indian Engineering Services">Indian Engineering Services</a> examination conducted by the <a href="/wiki/Union_Public_Service_Commission" title="Union Public Service Commission">Union Public Service Commission</a> . The important posts/ grades in Survey of India are in the following order of seniority: <a href="/wiki/Draftsman" class="mw-redirect" title="Draftsman">Draftsman</a>, Plane Tabler, Survey Assistant, <a href="/wiki/Surveying" title="Surveying">Surveyor</a>, Officer Surveyor, Deputy Superintending Surveyor, Superintending Surveyor, Superintending Surveyor (Non-Functional Second Grade)/Deputy Director, Director/Deputy Surveyor General, Additional Surveyor General, <a href="/wiki/Surveyor_General" class="mw-redirect" title="Surveyor General">Surveyor General</a>. </p> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(3)"><span class="indicator mf-icon mf-icon-expand mf-icon--small"></span><h2 id="Responsibilities">Responsibilities</h2><span class="mw-editsection"> <a role="button" href="/w/index.php?title=Survey_of_India&action=edit&section=3" title="Edit section: Responsibilities" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> <span class="minerva-icon minerva-icon--edit"></span> <span>edit</span> </a> </span> </div><section class="mf-section-3 collapsible-block" id="mf-section-3"> <ul><li><b>Advisor to the Indian Government:</b> The Survey of India acts as an adviser to the Government of India on all <a href="/wiki/Cartography_of_India" title="Cartography of India">cartography</a>-related matters, such as <a href="/wiki/Geodesy" title="Geodesy">geodesy</a>, <a href="/wiki/Photogrammetry" title="Photogrammetry">photogrammetry</a>, <a href="/wiki/Cartography" title="Cartography">mapping</a> and <a href="/wiki/Cartography#Map_symbology" title="Cartography">map reproduction</a>.</li> <li><b>Geo names:</b> Survey of India is responsible for the <a href="/wiki/Naming_convention" title="Naming convention">naming convention</a> and spellings of names of <a href="/wiki/Geography_of_India" title="Geography of India">geographical features of India</a>.</li> <li><b>Certification and publication:</b> Scrutiny and certification of external boundaries of India and Coastline on maps published by the other agencies including private publishers. Publication of <a href="/wiki/Tide_table" title="Tide table">tide tables</a> (one year in advance) and maps of India.</li> <li><b>Surveys:</b> <a href="/wiki/Geodetic_datum" title="Geodetic datum">geodetic datum</a>, <a href="/wiki/Geodetic_control_network" title="Geodetic control network">geodetic control network</a>, <a href="/wiki/Topographic_map" title="Topographic map">topographical control</a>, <a href="/wiki/Geophysical_survey" title="Geophysical survey">geophysical surveys</a>, <a href="/wiki/Cadastral_surveying" title="Cadastral surveying">cadastral surveying</a>, <a href="/wiki/Geologic_map" title="Geologic map">geologic maps</a>, <a href="/wiki/Aeronautical_chart" title="Aeronautical chart">aeronautical charts</a> within India, such as for forests, army cantonments, large scale cities, guide maps, developmental or conservation projects, etc.</li> <li><b>National borders:</b> Demarcation of the <a href="/wiki/Category:Borders_of_India" title="Category:Borders of India">borders</a> and <a href="/wiki/Exclusive_economic_zone#India" title="Exclusive economic zone">external boundaries</a> of India as well as advice on the demarcation of inter-state boundaries.</li> <li><b>Oceanic tidal prediction:</b> Undertake prediction of <a href="/wiki/Tide" title="Tide">tides</a> at <a href="/wiki/Ports_in_India" class="mw-redirect" title="Ports in India">44 ports</a> including <a href="/wiki/List_of_countries_with_overseas_military_bases#India" title="List of countries with overseas military bases">14 foreign ports</a>.</li> <li><b>Research and development:</b> In the area of <a href="/wiki/Photogrammetry" title="Photogrammetry">photogrammetry</a>, cartography, geodesy, topographical surveys and indigenisation of technology.</li> <li><b>Training:</b> Training for the central and state government departments as well as from foreign countries.</li></ul> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(4)"><span class="indicator mf-icon mf-icon-expand mf-icon--small"></span><h2 id="Maps">Maps</h2><span class="mw-editsection"> <a role="button" href="/w/index.php?title=Survey_of_India&action=edit&section=4" title="Edit section: Maps" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> <span class="minerva-icon minerva-icon--edit"></span> <span>edit</span> </a> </span> </div><section class="mf-section-4 collapsible-block" id="mf-section-4"> <p>The Survey of India publishes maps and the unrestricted category maps can be obtained from its several Geo-spatial data centers. Restricted category maps require due approval from government authorities. Many other rules govern the sale and use of Survey of India maps. Only an Indian citizen may purchase <a href="/wiki/Topographic_map" title="Topographic map">topographic maps</a> and these may not be exported from India for any reason.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> On 15 February 2021, the Government of India announced changes to the country's mapping policy which frees up lot of earlier restrictions related to mapping.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> A list of restrictions proposed is published by DST for comments by 30 July 2021.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </p> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(5)"><span class="indicator mf-icon mf-icon-expand mf-icon--small"></span><h2 id="Gallery">Gallery</h2><span class="mw-editsection"> <a role="button" href="/w/index.php?title=Survey_of_India&action=edit&section=5" title="Edit section: Gallery" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> <span class="minerva-icon minerva-icon--edit"></span> <span>edit</span> </a> </span> </div><section class="mf-section-5 collapsible-block" id="mf-section-5"> <style data-mw-deduplicate="TemplateStyles:r1275594942">@media all and (max-width:720px){.mw-parser-output .mod-gallery{width:100%!important}}.mw-parser-output .mod-gallery{display:table}.mw-parser-output .mod-gallery-default{background:transparent;margin-top:4px}.mw-parser-output .mod-gallery-center{margin-left:auto;margin-right:auto}.mw-parser-output .mod-gallery-left{float:left}.mw-parser-output .mod-gallery-right{float:right}.mw-parser-output .mod-gallery-none{float:none}.mw-parser-output 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.bordered-images .thumb img{outline:solid var(--background-color-neutral,#eaecf0)1px}.mw-parser-output .mod-gallery .whitebg .thumb{background:var(--background-color-base,#fff)!important}@media screen{html.skin-theme-clientpref-night .mw-parser-output .mod-gallery .bordered-images .thumb img[alt*="\200b \200b \200b "],html.skin-theme-clientpref-night .mw-parser-output .skin-invert-image .mod-gallery .whitebg .thumb.thumb.thumb img{outline:solid #d7d7d7 1px}html.skin-theme-clientpref-night .mw-parser-output .skin-invert-image .mod-gallery .whitebg .thumb.thumb.thumb img{background:none!important}html.skin-theme-clientpref-night .mw-parser-output .mod-gallery .whitebg .thumb img:not([alt*="\200b \200b \200b "]):not([alt*="\200b \200b \200c "]){background:white!important}html.skin-theme-clientpref-night .mw-parser-output .mod-gallery img[alt*="\200b \200b \200b "]{filter:invert(1)hue-rotate(180deg)}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .mod-gallery .bordered-images .thumb img[alt*="\200b \200b \200b "],html.skin-theme-clientpref-os .mw-parser-output .skin-invert-image .mod-gallery .whitebg .thumb.thumb.thumb img{outline:solid #d7d7d7 1px}html.skin-theme-clientpref-os .mw-parser-output .skin-invert-image .mod-gallery .whitebg .thumb.thumb.thumb img{background:none!important}html.skin-theme-clientpref-os .mw-parser-output .mod-gallery .whitebg .thumb img:not([alt*="\200b \200b \200b "]):not([alt*="\200b \200b \200c "]){background:white!important}html.skin-theme-clientpref-os .mw-parser-output .mod-gallery img[alt*="\200b \200b \200b "]{filter:invert(1)hue-rotate(180deg)}}</style><div class="mod-gallery mod-gallery-default mod-gallery-center"><div class="main"><div><ul class="gallery mw-gallery-traditional nochecker bordered-images whitebg"> <li class="gallerybox" style="width: 195px"> <div class="thumb" style="width: 190px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:SurveyOfIndia.png" class="mw-file-description" title="Old logo of the Survey of India"><noscript><img alt="Old logo of the Survey of India" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e6/SurveyOfIndia.png/79px-SurveyOfIndia.png" decoding="async" width="79" height="120" class="mw-file-element" data-file-width="984" data-file-height="1496"></noscript><span class="lazy-image-placeholder" style="width: 79px;height: 120px;" data-mw-src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e6/SurveyOfIndia.png/79px-SurveyOfIndia.png" data-alt="Old logo of the Survey of India" data-width="79" data-height="120" data-mw-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e6/SurveyOfIndia.png/118px-SurveyOfIndia.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e6/SurveyOfIndia.png/158px-SurveyOfIndia.png 2x" data-class="mw-file-element"> </span></a></span></div> <div class="gallerytext">Old logo of the Survey of India</div> </li> <li class="gallerybox" style="width: 195px"> <div class="thumb" style="width: 190px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Radhanath_Sikdar.jpg" class="mw-file-description" title="Radhanath Sikdar, a mathematician who first calculated the height of Mount Everest in 1852."><noscript><img alt="S" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/Radhanath_Sikdar.jpg/160px-Radhanath_Sikdar.jpg" decoding="async" width="160" height="120" class="mw-file-element" data-file-width="203" data-file-height="152"></noscript><span class="lazy-image-placeholder" style="width: 160px;height: 120px;" data-mw-src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/Radhanath_Sikdar.jpg/160px-Radhanath_Sikdar.jpg" data-alt="S" data-width="160" data-height="120" data-mw-srcset="//upload.wikimedia.org/wikipedia/commons/8/8a/Radhanath_Sikdar.jpg 1.5x" data-class="mw-file-element"> </span></a></span></div> <div class="gallerytext"><a href="/wiki/Radhanath_Sikdar" title="Radhanath Sikdar">Radhanath Sikdar</a>, a mathematician who first calculated the height of <a href="/wiki/Mount_Everest" title="Mount Everest">Mount Everest</a> in 1852.</div> </li> <li class="gallerybox" style="width: 195px"> <div class="thumb" style="width: 190px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:William_Lambton.jpg" class="mw-file-description" title="William Lambton (1753 – 19 January 1823) started Great Trigonometrical Survey (1802–1852)."><noscript><img alt="William Lambton (1753 – 19 January 1823) started Great Trigonometrical Survey (1802–1852)." src="//upload.wikimedia.org/wikipedia/commons/thumb/c/ca/William_Lambton.jpg/88px-William_Lambton.jpg" decoding="async" width="88" height="120" class="mw-file-element" data-file-width="723" data-file-height="990"></noscript><span class="lazy-image-placeholder" style="width: 88px;height: 120px;" data-mw-src="//upload.wikimedia.org/wikipedia/commons/thumb/c/ca/William_Lambton.jpg/88px-William_Lambton.jpg" data-alt="William Lambton (1753 – 19 January 1823) started Great Trigonometrical Survey (1802–1852)." data-width="88" data-height="120" data-mw-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/ca/William_Lambton.jpg/131px-William_Lambton.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/ca/William_Lambton.jpg/175px-William_Lambton.jpg 2x" data-class="mw-file-element"> </span></a></span></div> <div class="gallerytext"><a href="/wiki/William_Lambton" title="William Lambton">William Lambton</a> (1753 – 19 January 1823) started <a href="/wiki/Great_Trigonometrical_Survey" title="Great Trigonometrical Survey">Great Trigonometrical Survey</a> (1802–1852).</div> </li> </ul></div></div></div> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(6)"><span class="indicator mf-icon mf-icon-expand mf-icon--small"></span><h2 id="See_also">See also</h2><span class="mw-editsection"> <a role="button" href="/w/index.php?title=Survey_of_India&action=edit&section=6" title="Edit section: See also" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> <span class="minerva-icon minerva-icon--edit"></span> <span>edit</span> </a> </span> </div><section class="mf-section-6 collapsible-block" id="mf-section-6"> <ul><li><a href="/wiki/Indian_Institute_of_Surveying_%26_Mapping" title="Indian Institute of Surveying & Mapping">Indian Institute of Surveying & Mapping</a> (IIS&M)</li> <li><a href="/wiki/Survey_of_India_Service" title="Survey of India Service">Survey of India Service</a></li> <li><a href="/wiki/Cartography_of_India" title="Cartography of India">Cartography of India</a></li> <li><a href="/wiki/Linguistic_Survey_of_India" title="Linguistic Survey of India">Linguistic Survey of India</a></li></ul> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(7)"><span class="indicator mf-icon mf-icon-expand mf-icon--small"></span><h2 id="References">References</h2><span class="mw-editsection"> <a role="button" href="/w/index.php?title=Survey_of_India&action=edit&section=7" title="Edit section: References" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> <span class="minerva-icon minerva-icon--edit"></span> <span>edit</span> </a> </span> </div><section class="mf-section-7 collapsible-block" id="mf-section-7"> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns 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no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.surveyofindia.gov.in/pages/view/10-about-us">"About Us"</a>. <i>Survey of India</i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20180526230609/http://www.surveyofindia.gov.in/pages/view/10-about-us">Archived</a> from the original on 26 May 2018<span class="reference-accessdate">. Retrieved <span class="nowrap">27 May</span> 2018</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Survey+of+India&rft.atitle=About+Us&rft_id=http%3A%2F%2Fwww.surveyofindia.gov.in%2Fpages%2Fview%2F10-about-us&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASurvey+of+India" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.surveyofindia.gov.in/pages/display/192-contact-us">"Contact us"</a>. <i>Survey of India</i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20180515053914/http://surveyofindia.gov.in/pages/display/192-contact-us">Archived</a> from the original on 15 May 2018<span class="reference-accessdate">. Retrieved <span class="nowrap">27 May</span> 2018</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Survey+of+India&rft.atitle=Contact+us&rft_id=http%3A%2F%2Fwww.surveyofindia.gov.in%2Fpages%2Fdisplay%2F192-contact-us&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASurvey+of+India" class="Z3988"></span></span> </li> <li id="cite_note-si1-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-si1_3-0">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://indianexpress.com/article/india/on-250th-birthday-survey-of-india-wants-to-shed-its-cloak-of-secrecy/">On 250th birthday, Survey of India wants to shed its cloak of secrecy</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20170129065938/http://indianexpress.com/article/india/on-250th-birthday-survey-of-india-wants-to-shed-its-cloak-of-secrecy/">Archived</a> 29 January 2017 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>, <a href="/wiki/Indian_Express" class="mw-redirect" title="Indian Express">Indian Express</a>.</span> </li> <li id="cite_note-si2-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-si2_4-0">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://books.google.com/books?id=oGVSvXuCsyUC&dq=St.+Peter%27s+Church+allahabad&pg=SL1-PA63">St. Peter Church Allahabad</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20230217145607/https://books.google.com/books?id=oGVSvXuCsyUC&pg=SL1-PA63&dq=St.+Peter%27s+Church+allahabad&hl=en&sa=X&ei=irMpUu_CN-XsiAfesIHgDg&redir_esc=y#v=onepage&q=St.%20Peter's%20Church%20allahabad&f=false">Archived</a> 17 February 2023 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>.</span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDean2019" class="citation book cs1">Dean, Riaz (2019). <i>Mapping The Great Game: Explorers, Spies & Maps in Nineteenth-century Asia</i>. Oxford: Casemate (UK). pp. <span class="nowrap">72–</span>83. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-61200-814-1" title="Special:BookSources/978-1-61200-814-1"><bdi>978-1-61200-814-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Mapping+The+Great+Game%3A+Explorers%2C+Spies+%26+Maps+in+Nineteenth-century+Asia&rft.place=Oxford&rft.pages=%3Cspan+class%3D%22nowrap%22%3E72-%3C%2Fspan%3E83&rft.pub=Casemate+%28UK%29&rft.date=2019&rft.isbn=978-1-61200-814-1&rft.aulast=Dean&rft.aufirst=Riaz&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASurvey+of+India" class="Z3988"></span></span> </li> <li id="cite_note-si3-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-si3_6-0">^</a></b></span> <span class="reference-text">Baramahal records Vol.I P.220, In Letter Dated 04.10.1797 The British Government appreciated Col. Alexander Read.</span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.geospatialworld.net/article/restriction-on-maps-in-india/">"Restriction on maps in India"</a>. 3 December 2010. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20220130035246/https://www.geospatialworld.net/article/restriction-on-maps-in-india/">Archived</a> from the original on 30 January 2022<span class="reference-accessdate">. Retrieved <span class="nowrap">20 March</span> 2021</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Restriction+on+maps+in+India&rft.date=2010-12-03&rft_id=https%3A%2F%2Fwww.geospatialworld.net%2Farticle%2Frestriction-on-maps-in-india%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASurvey+of+India" class="Z3988"></span></span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFChaudhary2021" class="citation web cs1">Chaudhary, Swapnil (17 February 2021). <a rel="nofollow" class="external text" href="https://www.policycode.com/analysis/new-mapping-policy-to-be-promising-and-growth-ridden-step-for-india/">"New mapping policy"</a>. <i>Policy Code</i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20210420214629/https://www.policycode.com/analysis/new-mapping-policy-to-be-promising-and-growth-ridden-step-for-india/">Archived</a> from the original on 20 April 2021<span class="reference-accessdate">. Retrieved <span class="nowrap">5 July</span> 2021</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Policy+Code&rft.atitle=New+mapping+policy&rft.date=2021-02-17&rft.aulast=Chaudhary&rft.aufirst=Swapnil&rft_id=https%3A%2F%2Fwww.policycode.com%2Fanalysis%2Fnew-mapping-policy-to-be-promising-and-growth-ridden-step-for-india%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASurvey+of+India" class="Z3988"></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://dst.gov.in/sites/default/files/Tentative%20%20List%20of%20Combined%20Negative%20Atrributes.pdf">"Tentative List of Features/Installations and their sensitive attributes with reference to para 8(iii)(a) of the "Guidelines for acquiring and producing Geospatial Data and Geospatial Data Services including Maps" issued on 15.02.2021"</a> <span class="cs1-format">(PDF)</span>. <i>Policy Code</i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20211001212539/https://dst.gov.in/sites/default/files/Tentative%20%20List%20of%20Combined%20Negative%20Atrributes.pdf">Archived</a> <span class="cs1-format">(PDF)</span> from the original on 1 October 2021<span class="reference-accessdate">. Retrieved <span class="nowrap">6 January</span> 2022</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Policy+Code&rft.atitle=Tentative+List+of+Features%2FInstallations+and+their+sensitive+attributes+with+reference+to+para+8%28iii%29%28a%29+of+the+%22Guidelines+for+acquiring+and+producing+Geospatial+Data+and+Geospatial+Data+Services+including+Maps%22+issued+on+15.02.2021&rft_id=https%3A%2F%2Fdst.gov.in%2Fsites%2Fdefault%2Ffiles%2FTentative%2520%2520List%2520of%2520Combined%2520Negative%2520Atrributes.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASurvey+of+India" class="Z3988"></span></span> </li> </ol></div></div> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(8)"><span class="indicator mf-icon mf-icon-expand mf-icon--small"></span><h2 id="Further_reading">Further reading</h2><span class="mw-editsection"> <a role="button" href="/w/index.php?title=Survey_of_India&action=edit&section=8" title="Edit section: Further reading" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> <span class="minerva-icon minerva-icon--edit"></span> <span>edit</span> </a> </span> </div><section class="mf-section-8 collapsible-block" id="mf-section-8"> <ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFStacey's_Adventure2009" class="citation book cs1">Stacey's Adventure, Stacey V. (2009). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=LF_FBgAAQBAJ"><i>Mapping an Empire: The Geographical Construction of British India, 1765-1843</i></a>. University of Chicago Press. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-226-18486-9" title="Special:BookSources/978-0-226-18486-9"><bdi>978-0-226-18486-9</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Mapping+an+Empire%3A+The+Geographical+Construction+of+British+India%2C+1765-1843&rft.pub=University+of+Chicago+Press&rft.date=2009&rft.isbn=978-0-226-18486-9&rft.aulast=Stacey%27s+Adventure&rft.aufirst=Stacey+V.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DLF_FBgAAQBAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASurvey+of+India" class="Z3988"></span></li> <li><a href="/wiki/John_Keay" title="John Keay">John Keay</a>. 2000. <i><a rel="nofollow" class="external text" href="https://books.google.com/books?id=JgsgAQAAIAAJ">The Great Arc</a></i>, London: HarperCollins. <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-00-257062-9" title="Special:BookSources/0-00-257062-9">0-00-257062-9</a>.</li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDean2019" class="citation book cs1">Dean, Riaz (2019). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=WF3JDwAAQBAJ"><i>Mapping The Great Game: Explorers, Spies & Maps in Nineteenth-century Asia</i></a>. Oxford: Casemate (UK). pp. <span class="nowrap">67–</span>123. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-61200-814-1" title="Special:BookSources/978-1-61200-814-1"><bdi>978-1-61200-814-1</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Mapping+The+Great+Game%3A+Explorers%2C+Spies+%26+Maps+in+Nineteenth-century+Asia&rft.place=Oxford&rft.pages=%3Cspan+class%3D%22nowrap%22%3E67-%3C%2Fspan%3E123&rft.pub=Casemate+%28UK%29&rft.date=2019&rft.isbn=978-1-61200-814-1&rft.aulast=Dean&rft.aufirst=Riaz&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DWF3JDwAAQBAJ&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASurvey+of+India" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDeb_Roy1986" class="citation cs2">Deb Roy, Rama (1986), <a rel="nofollow" class="external text" href="https://web.archive.org/web/20140125140928/http://www.new1.dli.ernet.in/data1/upload/insa/INSA_1/20005b5b_22.pdf">"The Great Trigonometrical Survey of India in a Historical Perspective"</a> <span class="cs1-format">(PDF)</span>, <i>Indian Journal of History of Science</i>, <b>21</b> (1): <span class="nowrap">22–</span>32, archived from <a rel="nofollow" class="external text" href="http://www.new1.dli.ernet.in/data1/upload/insa/INSA_1/20005b5b_22.pdf">the original</a> <span class="cs1-format">(PDF)</span> on 25 January 2014</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Indian+Journal+of+History+of+Science&rft.atitle=The+Great+Trigonometrical+Survey+of+India+in+a+Historical+Perspective&rft.volume=21&rft.issue=1&rft.pages=%3Cspan+class%3D%22nowrap%22%3E22-%3C%2Fspan%3E32&rft.date=1986&rft.aulast=Deb+Roy&rft.aufirst=Rama&rft_id=http%3A%2F%2Fwww.new1.dli.ernet.in%2Fdata1%2Fupload%2Finsa%2FINSA_1%2F20005b5b_22.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASurvey+of+India" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHeaney1952" class="citation cs2">Heaney, G. F. (September 1952), "The Survey of India Since the Second World War", <i>The Geographical Journal</i>, <b>118</b> (3): <span class="nowrap">280–</span>293, <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.2307%2F1790313">10.2307/1790313</a>, <a href="/wiki/JSTOR_(identifier)" class="mw-redirect" title="JSTOR (identifier)">JSTOR</a> <a rel="nofollow" class="external text" href="https://www.jstor.org/stable/1790313">1790313</a></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Geographical+Journal&rft.atitle=The+Survey+of+India+Since+the+Second+World+War&rft.volume=118&rft.issue=3&rft.pages=%3Cspan+class%3D%22nowrap%22%3E280-%3C%2Fspan%3E293&rft.date=1952-09&rft_id=info%3Adoi%2F10.2307%2F1790313&rft_id=https%3A%2F%2Fwww.jstor.org%2Fstable%2F1790313%23id-name%3DJSTOR&rft.aulast=Heaney&rft.aufirst=G.+F.&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASurvey+of+India" class="Z3988"></span></li> <li>Reginald Henry Phillimore, <i>Historical Records of the Survey of India,</i> 5 vols. Dehra Dun, Survey of India (1945–1968) <ul><li><a rel="nofollow" class="external text" href="https://archive.org/details/in.gov.ignca.35328">Volume 1: 18th Century</a>; <a rel="nofollow" class="external text" href="https://archive.org/details/in.gov.ignca.35329">Volume 2: 1800 to 1815</a>; <a rel="nofollow" class="external text" href="https://archive.org/details/in.gov.ignca.27830">Volume 3: 1815 to 1830</a>; <a rel="nofollow" class="external text" href="https://archive.org/details/in.gov.ignca.27831">Volume 4: 1830 to 1843</a>; <a rel="nofollow" class="external text" href="https://archive.org/details/1968-historical-records-of-survey-of-india-vol-5-by-phillimore-s-volume-v">Volume 5: 1844 to 1861</a></li></ul></li></ul> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(9)"><span class="indicator mf-icon mf-icon-expand mf-icon--small"></span><h2 id="External_links">External links</h2><span class="mw-editsection"> <a role="button" href="/w/index.php?title=Survey_of_India&action=edit&section=9" title="Edit section: External links" class="cdx-button cdx-button--size-large cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--icon-only cdx-button--weight-quiet "> <span class="minerva-icon minerva-icon--edit"></span> <span>edit</span> </a> </span> </div><section class="mf-section-9 collapsible-block" id="mf-section-9"> <ul><li><span class="official-website"><span class="url"><a rel="nofollow" class="external text" href="https://www.surveyofindia.gov.in/">Official website</a></span></span> <span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q1359276#P856" title="Edit this at Wikidata"><noscript><img alt="Edit this at Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" data-file-width="20" data-file-height="20"></noscript><span class="lazy-image-placeholder" style="width: 10px;height: 10px;" data-mw-src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" data-alt="Edit this at Wikidata" data-width="10" data-height="10" data-mw-srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-class="mw-file-element"> </span></a></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://onlinemaps.surveyofindia.gov.in/">"Online maps portal of Survey of India"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">6 January</span> 2022</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Online+maps+portal+of+Survey+of+India&rft_id=https%3A%2F%2Fonlinemaps.surveyofindia.gov.in%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASurvey+of+India" class="Z3988"></span></li> <li><a rel="nofollow" class="external text" href="https://deeppradhan.heliohost.org/gis/indian-grid/">India Grid System</a>: the <a href="/wiki/Coordinate_system" title="Coordinate system">coordinate system</a> used by Survey of India.</li> <li><a rel="nofollow" class="external text" href="https://deeppradhan.heliohost.org/gis/map-numbering/osm.htm">Open Series Map (OSM)</a>: new map numbering system introduced as per the <a rel="nofollow" class="external text" href="http://www.surveyofindia.gov.in/files/nmp/National%20Map%20Policy.pdf">National Map Policy of 2005</a> by Survey of India.</li> <li><a rel="nofollow" class="external text" href="https://deeppradhan.heliohost.org/gis/map-numbering/iac.htm">India and Adjacent Countries (IAC)</a>: old map numbering system used previously by Survey of India</li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul ul{display:inline}.mw-parser-output .hlist .mw-empty-li{display:none}.mw-parser-output .hlist dt::after{content:": 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