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Predicted pH at the domestic and public supply drinking water depths, Central Valley, California Predicted pH at the domestic and public supply drinking water depths, Central Valley, California
This scientific investigations map is a product of the U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) project modeling and mapping team. The prediction grids depicted in this map are of continuous pH and are intended to provide an understanding of groundwater-quality conditions at the domestic and public supply drinking water zones in the groundwater of the...
Bathymetry of Clear Creek Reservoir, Chaffee County, Colorado, 2016 Bathymetry of Clear Creek Reservoir, Chaffee County, Colorado, 2016
To better characterize the water supply capacity of Clear Creek Reservoir, Chaffee County, Colorado, the U.S. Geological Survey, in cooperation with the Pueblo Board of Water Works and Colorado Mountain College, carried out a bathymetry survey of Clear Creek Reservoir. A bathymetry map of the reservoir is presented here with the elevation-surface area and the elevation-volume relations...
Bedrock geologic map of the northern Alaska Peninsula area, southwestern Alaska Bedrock geologic map of the northern Alaska Peninsula area, southwestern Alaska
The northern Alaska Peninsula is a region of transition from the classic magmatic arc geology of the Alaska Peninsula to a Proterozoic and early Paleozoic carbonate platform and then to the poorly understood, tectonically complex sedimentary basins of southwestern Alaska. Physiographically, the region ranges from the high glaciated mountains of the Alaska-Aleutian Range to the coastal...
Map of flow field Map of flow field
This map shows recent changes to Kīlauea's East Rift Zone lava flow field.
Map of flow field Map of flow field
This map shows recent changes to Kīlauea's East Rift Zone lava flow field.
Small-scale map of flow field Small-scale map of flow field
This map shows recent changes to Kīlauea's East Rift Zone lava flow field.
Bathymetry and capacity of Shawnee Reservoir, Oklahoma, 2016 Bathymetry and capacity of Shawnee Reservoir, Oklahoma, 2016
Shawnee Reservoir (locally known as Shawnee Twin Lakes) is a man-made reservoir on South Deer Creek with a drainage area of 32.7 square miles in Pottawatomie County, Oklahoma. The reservoir consists of two lakes connected by an equilibrium channel. The southern lake (Shawnee City Lake Number 1) was impounded in 1935, and the northern lake (Shawnee City Lake Number 2) was impounded in...
Stratigraphic cross sections of the Niobrara interval of the Cody Shale and associated rocks in the Wind River Basin, central Wyoming Stratigraphic cross sections of the Niobrara interval of the Cody Shale and associated rocks in the Wind River Basin, central Wyoming
The Wind River Basin in Wyoming is one of many structural and sedimentary basins that formed in the Rocky Mountain foreland during the Laramide orogeny. The basin is nearly 200 miles long, 70 miles wide, and encompasses about 7,400 square miles in central Wyoming. The basin is bounded by the Washakie Range, Owl Creek uplift, and southern Bighorn Mountains on the north, the Casper arch on...
Map of flow field Map of flow field
This map shows recent changes to Kīlauea’s East Rift Zone lava flow field.
Geologic map of the Fittstown 7.5΄ quadrangle, Pontotoc and Johnston Counties, Oklahoma Geologic map of the Fittstown 7.5΄ quadrangle, Pontotoc and Johnston Counties, Oklahoma
This 1:24,000-scale geologic map includes new geologic mapping as well as compilation and revision of previous geologic maps in the area. Field investigations were carried out during 2009–2011 that included mapping and investigations of the geology and hydrology of the Chickasaw National Recreation Area, Oklahoma, west of the map area. The Fittstown quadrangle is in Pontotoc and Johnston...
Kamokuna ocean entry map Kamokuna ocean entry map
This map shows the coastline at the Kamokuna lava entry on Kīlauea Volcano, with labels denoting areas impacted by the large, progressive lava-delta collapse on December 31, 2016.
Geologic map of the Bateman Spring Quadrangle, Lander County, Nevada Geologic map of the Bateman Spring Quadrangle, Lander County, Nevada
This 1:24,000-scale geologic map of the Bateman Spring 7.5-minute quadrangle in Lander County, Nevada contains descriptions of 24 geologic units and one cross section. Accompanying text includes full unit descriptions and references. This quadrangle includes lower Paleozoic siliciclastic sedimentary rocks of the Roberts Mountain allochthon, Miocene intrusive dikes, alluvial deposits of...