Mean annual streamflow of selected drainage basins in the coal area of southeastern Montana
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Abstract
Streamflow characteristics of drainage basins within the Fort Union coal region of southeastern Montana were estimated to provide premining data for evaluating the future effects of mining on the environment. Estimated annual mean streamflow at 22 data-collection stations for water years 1975-77 ranged from 0 to 887 cubic feet per second. These estimates are based on miscellaneous-streamflow records at each station and continuous-streamflow records from other stations in the study area. Estimated mean annual streamflow for a 10-year period (water years 1968-77) ranged from 0 to 572 cubic feet per second. These long-term estimates were based on data from stations near the study area having continuous-streamflow records. Estimated mean annual runoff in inches for selected drainage basins within the study area showed no discernible pattern. Many of the drainage basins had a mean annual runoff of less than 0.60 inch; the maximum observed mean annual runoff was 4.45 inches.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Mean annual streamflow of selected drainage basins in the coal area of southeastern Montana |
| Series title | Water-Resources Investigations Report |
| Series number | 81-61 |
| DOI | 10.3133/wri8161 |
| Year Published | 1981 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Description | iv, 21 p. |
| Country | United States |
| State | Montana |
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