1.0 DCPLUS 20240802 17594100 20250103 17594100 https://www.arcgis.com/sharing/rest/content/items/ce7674c4f2144ef08f00d0c3202afb7f/info/thumbnail/thumbnail1722621712305.png https://www.arcgis.com/home/item.html?id=ce7674c4f2144ef08f00d0c3202afb7f ce7674c4f2144ef08f00d0c3202afb7f Feature Service https://services1.arcgis.com/jRf8jjFwxedITdFe/arcgis/rest/services/QIv1/FeatureServer QIv1 USGS Oklahoma 7.5m Samples Grid USGS Topographic Quad Indices (QIs) covering the State of Oklahoma. Pared down and filtered from the original dataset. Intended to be used in experimental survey procedures. <font color='#000000'><font size='4'>USGS </font><b>Q</b><font size='4'>uadrangle </font><b>I</b><font size='4'>ndices </font><b>v</b><font size='4'>ersion </font><b>1</b><font size='4'>.001  </font><b><font size='5'>→</font></b><font size='4'>  </font><b>QIv1</b></font><div><b><font color='#000000'><br /></font></b></div><div><span style='font-size:large;'><font color='#000000'>A net of <i>1,260</i> USGS 7.5' Quadrangle boundaries, such that no portion of Oklahoma is left uncovered.</font></span></div><div><span style='font-size:large;'><font color='#000000'><br /></font></span></div><div><span style='font-size:large;'><font color='#000000'>Each Quad retains its USGS designated MapCode, Name, and State.</font></span></div><div><br /></div><div><img src='https://odwc.maps.arcgis.com/sharing/rest/content/items/0335b37797ba4eca9f83ce89560b683a/data' /></div><div><img style='color:rgb(0, 0, 0); font-size:large;' /></div><div><font color='#000000' size='4'>The MapCodes are arranged from blocks of 1° Lat/Lon described by the first 5 integers, and then by an alpha-numeric sub-grid position for every 7.5' (<b>A</b>-<b>H</b> [east to west] and <b>1</b>-<b>8</b> [north to south], there being 8 periods of 7.5 minutes for each degree).</font></div><div><font color='#000000' size='4'><br /></font></div><div><font color='#696969' size='4'><i>As an example: The Topo Map covering (and named after) Bison, OK has a MapCode of 36097-B8...</i></font></div><div><ul><li><font color='#696969' size='4'><i>36097 (or 36°N 97°W) is located central and north, right on the border with Kansas</i></font></li><li><font color='#696969' size='4'><i>B indicates the position is towards the West side of the Degree Block</i></font></li><li><font color='#696969' size='4'><i>8 tells us that its located at the most Southerly position</i></font></li></ul><div><i><font color='#696969'><span style='font-size:large;'>36097-B8 is in the SW portion of the area covered by </span><font size='4'></font><span style='font-size:large;'>36</span><span style='font-size:large;'>°N 97</span><span style='font-size:large;'>°W.</span></font></i></div></div><div><font color='#000000' size='4'><br /></font></div> -103.142 -94.321 37.098 33.53 1 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ce7674c4f2144ef08f00d0c3202afb7f https://services1.arcgis.com/jRf8jjFwxedITdFe/arcgis/rest/services/QIv1/FeatureServer Feature Service EPSG