Scientific Investigations Report 2006-5111
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2006-5111
Table 7. Subbasin areas, selected land-use metrics, and fish Index of Biotic Integrity scores for selected sampling events on the lower Boise River, southwestern Idaho, 2000–03.
[Subbasins and reach locations are shown in figure 1 and table 2. Subbasin area: including 2,690 mi2 upstream of Lucky Peak Dam. Abbreviations: WTF, wastewater- treatment facility; mi2, square mile; IBI, Index of Biotic Integrity]
| Fish sampling reach No. | Fish sampling reach name | Subbasin | Subbasin area (mi2) | 2001 developed land (mi2) | 2000-01 impervious surface (mi2) | 2001 number of major diversions | IBI score (year sampled) |
|---|---|---|---|---|---|---|---|
| 1 | Downstream of Barber Dam | Upstream of Eagle Island | 2,710 | 0.12 | 1.70 | 5 | 93 (2003) |
| 2 | Upstream of Lander WTF | Upstream of Eagle Island | 2,770 | 14.8 | 14.3 | 13 | 89 (2003) |
| 3 | Downstream of Lander WTF | 73 (2003) | |||||
| 4 | Upstream of West Boise WTF | Upstream of Eagle Road | 2,777 | 17.6 | 16.5 | 19 | 72 (2003) |
| 5 | Downstream of West Boise WTF | 77 (2003) | |||||
| 7 | Middleton | Upstream of Middleton | 2,894 | 27.5 | 25.8 | 31 | 39 (1996) |
| 9 | Mouth | Upstream of mouth | 3,910 | 79.9 | 73.9 | 57 | 11 (1996) |
U.S.
Department of the Interior | U.S. Geological
Survey
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