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Data Series 732

Prepared in cooperation with Turtle Mountain Band of Chippewa Indians

Assessment of Groundwater Quality Data for the Turtle Mountain Indian Reservation, Rolette County, North Dakota, 1970–2012

By Robert F. Lundgren and Kevin C. Vining

Thumbnail of and link to report PDF (729 kB)Abstract

The Turtle Mountain Indian Reservation relies on groundwater supplies to meet the demands of community and economic needs. The U.S. Geological Survey, in cooperation with the Turtle Mountain Band of Chippewa Indians, examined historical groundwater-level and groundwater-quality data for the Fox Hills, Hell Creek, Rolla, and Shell Valley aquifers. The two main sources of water-quality data for groundwater were the U.S. Geological Survey National Water Information System database and the North Dakota State Water Commission database. Data included major ions, trace elements, nutrients, field properties, and physical properties.

The Fox Hills and Hell Creek aquifers had few groundwater water-quality data. The lack of data limits any detailed assessments that can be made about these aquifers. Data for the Rolla aquifer exist from 1978 through 1980 only. The concentrations of some water-quality constituents exceeded the U.S. Environmental Protection Agency secondary maximum contaminant levels. No samples were analyzed for pesticides and hydrocarbons.

Numerous water-quality samples have been obtained from the Shell Valley aquifer. About one-half of the water samples from the Shell Valley aquifer had concentrations of iron, manganese, sulfate, and dissolved solids that exceeded the U.S. Environmental Protection Agency secondary maximum contaminant levels. Overall, the data did not indicate obvious patterns in concentrations.

First posted February 8, 2013

For additional information contact:
Director, North Dakota Water Science Center
U.S. Geological Survey
821 E. Interstate Ave.
Bismarck, ND 58503
(701) 250–7400
http://nd.water.usgs.gov

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Suggested citation:

Lundgren, R.F., and Vining, K.C., 2013, Assessment of groundwater quality data for the Turtle Mountain Indian Reservation, Rolette County, North Dakota: U.S. Geological Survey Data Series 732, 17 p. and supplements.



Contents

Abstract

Introduction

Data Sources

Physical Setting of the Study Area

Assessment of Groundwater Levels

Assessment of Groundwater Quality

Implications

Summary

References Cited

Supplements


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