Scientific Investigations Report 2005-5227
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2005-5227
Compilation of Geologic, Hydrologic, and Ground-Water Flow Modeling Information for the Spokane Valley–Rathdrum Prairie Aquifer, Spokane County, Washington, and Bonner and Kootenai Counties, Idaho
By Sue C. Kahle, Rodney R. Caldwell, and James R. Bartolino
Table of Contents
Conversion Factors and Datums
Abstract
Introduction
Previous Investigations
Geologic Information
Hydrologic Information
Previous Ground-Water Flow Modeling
Data Needs
Summary
Selected References
Figures
Figure 1. Location of the Spokane Valley–Rathdrum Prairie aquifer, Spokane County, Washington, and Bonner and Kootenai Counties, Idaho.
Figure 2. Generalized land cover or land use in the Spokane Valley–Rathdrum Prairie area, Washington and Idaho.
Figure 3. Average annual precipitation based on 30 years of record, 1961–90, in the Spokane Valley–Rathdrum Prairie area, Washington and Idaho.
Figure 4. Extent of glacial ice and glacial lakes in northern Washington, Idaho, and parts of Montana.
Figure 5. Boundary of the Sole Source Spokane Valley–Rathdrum Prairie aquifer, other study area extents, and generalized directions of ground-water flow, Washington and Idaho.
Figure 6. Locations of long-term and project-related lake-stage measurement sites, Washington and Idaho.
Figure 7. Water-table altitude and monitoring wells in part of the Spokane Valley–Rathdrum Prairie aquifer between Post Falls, Idaho, and Spokane, Washington.
Figure 8. Location of gaging stations, streamflow measurement sites in September 2004, and reach characteristics in the Spokane Valley–Rathdrum Prairie, Washington and Idaho.
Tables
Table 1. Geologic timescale with simplified geologic units of the study area.
Table 2. List of surficial geologic mapping available in the Spokane Valley–Rathdrum Prairie area, Spokane County, Washington, and Bonner and Kootenai Counties, Idaho.
Table 3. Summary statistics for 1,190 wells completed in the Spokane Valley–Rathdrum Prairie aquifer and surrounding basin-fill aquifers.
Table 4. Summary of historical or project-related lake stage data collection sites for lakes along the margins of the Spokane Valley–Rathdrum Prairie aquifer, Washington and Idaho.
Table 5. Published water budgets for the Spokane Valley–Rathdrum Prairie aquifer.
Table 6. Estimates of total recharge, land-surface recharge, and evapotranspiration for the Spokane Valley–Rathdrum Prairie aquifer.
Table 7. Estimates of seepage from lakes into the Spokane Valley–Rathdrum Prairie aquifer.
Table 8. Estimates of recharge from tributary streams, drainages, and uplands into the Spokane Valley–Rathdrum Prairie aquifer.
Table 9. Estimates of non-tributary underflow into and out of the Spokane Valley–Rathdrum Prairie aquifer.
Table 10. Estimates of seepage between the Spokane River and the Spokane Valley–Rathdrum Prairie aquifer.
Table 11. Estimates of ground-water withdrawals from the Spokane-Valley–Rathdrum Prairie aquifer.
Table 12. Estimates of discharges to surface water in the Spokane Valley–Rathdrum Prairie aquifer study area.
Table 13. Estimates of seepage between the Little Spokane River and the Spokane Valley–Rathdrum Prairie aquifer.
Table 14. Continuous streamflow gaging stations in the extent of the Spokane Valley–Rathdrum Prairie aquifer.
Table 15. Discharge measurements made on the Spokane River and some tributaries to study seepage gains and losses, September 13–16, 2004.
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Send questions or comments about this report to the authors, S.C. Kahle, (253) 428-3600 ext. 2616,
R.R. Caldwell, (406) 457-5933, and
J.R. Bartolino, (208) 387-1392.
For more information about USGS activities in Washington, visit the
USGS Washington District home page
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