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Scientific Investigations Map 2993

Pubs Warehouse

### Prepared in cooperation with the Oglala Sioux Tribe

## Generalized Potentiometric Surface of the Arikaree Aquifer, Pine Ridge Indian Reservation and Bennett County, South Dakota

#### By Janet M. Carter and Allen J. Heakin

| Introduction
The Pine Ridge Indian Reservation and Bennett County are located in southwest South Dakota. The Pine Ridge Indian Reservation includes all of Shannon County and the part of Jackson County south of the White River. Extensive Indian trust lands are in Bennett County. For purposes of this map, the Pine Ridge Indian Reservation and all of Bennett County are included in the study area (sheet 1).

Ground water from wells and springs is the predominant source of public and domestic supply within the study area. The Arikaree aquifer is the largest source of ground water throughout this area. The Oglala Sioux Tribe is developing a ground-water management plan designed to “preserve, protect and maintain the quality of ground water for living and future members and non-members of the Oglala Sioux Indian Tribe within the internal and external boundaries of the Pine Ridge Reservation” (Michael Catches Enemy, Oglala Sioux Tribe Natural Resources Regulatory Agency, oral commun., 2007). Hydrologic information about the Arikaree aquifer is important to managing this resource.

In 1998, the U.S. Geological Survey (USGS) began working in cooperation with the Oglala Sioux Tribe to develop a potentiometric map of the Arikaree aquifer in Jackson and Shannon Counties, with a primary component of that effort being a well inventory in those counties. In 2003, the study area was expanded to include Bennett County.
           | Version 1.0

March 2008 
-  **Sheet 1 PDF**(6.10 MB)  
-  **Sheet 2 PDF** (2.56 MB) 
-  **Supplemental Data** XLS (1.02 MB) 
-  Digital Data Files (Pine Ridge Indian Reservation and Bennett County)    - Area where the Arikaree aquifer is absent 
  - Ground-water flow lines used in the generalized potentiometric surface of the Arikaree aquifer 
  - Observation wells used in the creation of the generalized potentiometric surface of the Arikaree aquifer 
  - Springs used in the creation of the generalized potentiometric surface of the Arikaree aquifer 
  - Water-table contours for the Arikaree aquifer 
  - Nonobservation wells used in the creation of the generalized potentiometric surface of the Arikaree aquifer |
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**Suggested citation:**

Carter, J.M., and Heakin, A.J., 2007, Potentiometric surface of the Arikaree aquifer, Pine Ridge Indian Reservation and Bennett County, South Dakota: U.S. Geological Survey Scientific Investigations Map 2993, 2 sheets.

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U.S. Department of the Interior | U.S. Geological Survey	URL: *http://pubsdata.usgs.gov/pubs/sim/2993/index.html*	Questions or Assistance: Contact USGS	Last modified: Thursday, 01-Dec-2016 17:10:12 EST