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The Nacatoch Sand in southwestern Arkansas, hereafter referred to as the Nacatoch aquifer, is a source of groundwater for agricultural, domestic, industrial, and public use in Clark, Hempstead, Little River, Miller, and Nevada counties. Water-level altitudes measured in 39 wells completed in the Nacatoch aquifer were used to create a potentiometric-surface map. Groundwater flow direction is towards the south and southeast in Hempstead, Little River, and Nevada Counties in southwestern Arkansas. A possible cone of depression may exist in southern Clark County and likely alters groundwater flow from a regional direction toward the depression. This shapefile depicts the generalized study area of the Southwest Nacatoch...
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The Tokio Formation in southwestern Arkansas, hereafter referred to as the Tokio aquifer, is a source of groundwater for agricultural, domestic, industrial, and public use in Clark, Hempstead, Little River, Miller, Nevada, and Pike counties. Water-level altitudes measured 42 wells completed in the Tokio aquifer during 2014 and 2015 were used to create a potentiometric-surface map. In southwestern Arkansas, potentiometric surfaces indicate that groundwater flow in the Tokio aquifer is towards the city of Hope. Northwest of the city of Hope, a cone of depression may exist. In southwestern Pike, northwestern Nevada, and northeastern Hempstead Counties, an area of artesian flow (water levels are at or above land surface)...
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The Nacatoch Sand in southwestern Arkansas, hereafter referred to as the Nacatoch aquifer, is a source of groundwater for agricultural, domestic, industrial, and public use inClark, Hempstead, Little River, Miller and Nevada counties. Water-level altitudes measured in 39 wells completed in the Nacatoch aquifer were used to create a potentiometric-surface map. Groundwater flow direction is towards the south and southeast in Hempstead, Little River, and Nevada Counties in southwestern Arkansas. A possible cone of depression may exist in southern Clark County and likely alters groundwater flow from a regional direction toward the depression. This shapefile depicts the generalized extent of the Southwest Nacatoch aquifer.
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The Tokio Formation in southwestern Arkansas, hereafter referred to as the Tokio aquifer, is a source of groundwater for agricultural, domestic, industrial, and public use in Clark, Hempstead, Little River, Miller, Nevada, and Pike counties. Water-level altitudes measured 42 wells completed in the Tokio aquifer during 2014 and 2015 were used to create a potentiometric-surface map. In southwestern Arkansas, potentiometric surfaces indicate that groundwater flow in the Tokio aquifer is towards the city of Hope. Northwest of the city of Hope, a cone of depression may exist. In southwestern Pike, northwestern Nevada, and northeastern Hempstead Counties, an area of artesian flow (water levels are at or above land surface)...
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The Tokio Formation in southwestern Arkansas, hereafter referred to as the Tokio aquifer, is a source of groundwater for agricultural, domestic, industrial, and public use in Clark, Hempstead, Little River, Miller, Pike, and Nevada counties. Water-level altitudes measured 42 wells completed in the Tokio aquifer during 2014 and 2015 were used to create a potentiometric-surface map. In southwestern Arkansas, potentiometric surfaces indicate that groundwater flow in the Tokio aquifer is towards the city of Hope. Northwest of the city of Hope, a cone of depression may exist. In southwestern Pike, northwestern Nevada, and northeastern Hempstead Counties, an area of artesian flow (water levels are at or above land surface)...
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The Tokio Formation in southwestern Arkansas, hereafter referred to as the Tokio aquifer, is a source of groundwater for agricultural, domestic, industrial, and public use in Clark, Hempstead, Little River, Miller, Nevada, and Pike counties. Water-level altitudes measured 42 wells completed in the Tokio aquifer during 2014 and 2015 were used to create a potentiometric-surface map. In southwestern Arkansas, potentiometric surfaces indicate that groundwater flow in the Tokio aquifer is towards the city of Hope. Northwest of the city of Hope, a cone of depression may exist. In southwestern Pike, northwestern Nevada, and northeastern Hempstead Counties, an area of artesian flow (water levels are at or above land surface)...
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The Nacatoch Sand in southwestern Arkansas, hereafter referred to as the Nacatoch aquifer, is a source of groundwater for agricultural, domestic, industrial, and public use in Clark, Hempstead, Little River, Miller and Nevada counties. Water-level altitudes measured in 39 wells completed in the Nacatoch aquifer were used to create a potentiometric-surface map. Groundwater flow direction is towards the south and southeast in Hempstead, Little River, and Nevada Counties in southwestern Arkansas. A possible cone of depression may exist in southern Clark County and likely alters groundwater flow from a regional direction toward the depression. This shapefile contains the potentiometric-surface contours of the Southwest...
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The Nacatoch Sand in northeastern and Arkansas, is sources of groundwater for agricultural, domestic, industrial, and public use in Clay and Green Counties. Water-level altitudes measured in 12 wells completed in the Nacatoch Sand and were used to create a potentiometric-surface map. Potentiometric surfaces show that groundwater in the Nacatoch aquifer flows southeast toward the Mississippi River in northeastern Arkansas. This shapefile contains the potentiometric-surface contours for the Northeast Nacatoch aquifer.
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The Nacatoch Sand in northeastern and Arkansas, is sources of groundwater for agricultural, domestic, industrial, and public use Clay and Green Counties. Water-level altitudes measured in 12 wells completed in the Nacatoch Sand and were used to create a potentiometric-surface map. Potentiometric surfaces show that groundwater in the Nacatoch aquifer flows southeast toward the Mississippi River in northeastern Arkansas. This shapefiled depicts the generalized extent of the Northeast Nacatoch aquifer.
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The Nacatoch Sand in northeastern and southwestern Arkansas and the Tokio Formation in southwestern Arkansas are sources of groundwater for agricultural, domestic, industrial, and public use. Water-level altitudes measured in 51 wells completed in the Nacatoch Sand and 42 wells completed in the Tokio Formation during 2014 and 2015 were used to compile potentiometric-surface maps of the two areas. Aquifers in the Nacatoch Sand and Tokio Formation are hereafter referred to as the Nacatoch aquifer and the Tokio aquifer, respectively. Potentiometric surfaces show that groundwater in the Nacatoch aquifer flows southeast toward the Mississippi River in northeastern Arkansas. Groundwater flow direction is towards the south...
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The Nacatoch Sand in northeastern and Arkansas, is sources of groundwater for agricultural, domestic, industrial, and public use Clay and Green Counties. Water-level altitudes measured in 12 wells completed in the Nacatoch Sand and were used to create a potentiometric-surface map. Potentiometric surfaces show that groundwater in the Nacatoch aquifer flows southeast toward the Mississippi River in northeastern Arkansas. This shapefile contains the generalized study area of the Northeast Nacatoch aquifer.
    map background search result map search result map Potentiometric contours for the Nacatoch aquifer of Northeastern and Southwestern Arkansas and the Tokio aquifer of Southwestern Arkansas, 2014–15 NE Nacatoch potentiometric contours.shp SW Nacatoch potentiometric contours.shp Tokio potentiometric contours.shp NE Nacatoch study area.shp NE Nacatoch aquifer extent.shp SW Nacatoch study area.shp SW Nacatoch aquifer extent.shp Tokio study area Tokio aquifer extent.shp Tokio Artesian well extent.shp USGS 1:24000-scale Quadrangle for Tokio, ND 1994 USGS 1:24000-scale Quadrangle for Tokio, ND 1950 USGS 1:24000-scale Quadrangle for Tokio, ND 1975 USGS 1:62500-scale Quadrangle for Tokio, ND 1928 USGS 1:62500-scale Quadrangle for Tokio, ND 1951 USGS 1:62500-scale Quadrangle for Tokio, ND 1931 USGS 1:62500-scale Quadrangle for Tokio, ND 1931 USGS 1:24000-scale Quadrangle for Tokio, TX 1970 USGS 1:24000-scale Quadrangle for Tokio, ND 1994 USGS 1:24000-scale Quadrangle for Tokio, ND 1950 USGS 1:24000-scale Quadrangle for Tokio, ND 1975 USGS 1:24000-scale Quadrangle for Tokio, TX 1970 Tokio Artesian well extent.shp USGS 1:62500-scale Quadrangle for Tokio, ND 1928 USGS 1:62500-scale Quadrangle for Tokio, ND 1951 USGS 1:62500-scale Quadrangle for Tokio, ND 1931 USGS 1:62500-scale Quadrangle for Tokio, ND 1931 NE Nacatoch aquifer extent.shp NE Nacatoch potentiometric contours.shp NE Nacatoch study area.shp Tokio potentiometric contours.shp Tokio aquifer extent.shp SW Nacatoch aquifer extent.shp SW Nacatoch potentiometric contours.shp SW Nacatoch study area.shp Tokio study area Potentiometric contours for the Nacatoch aquifer of Northeastern and Southwestern Arkansas and the Tokio aquifer of Southwestern Arkansas, 2014–15