Scientific Investigations Report 2006–5145
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2006–5145
Table 4. Acreage of ET units within major spring-discharge areas of the Grapevine Springs imagery delineated using a modified soil-adjusted vegetation index.
[Spring-discharge areas shown in figure 8]
| Spring- discharge area |
ET-unit acreage, in acres | ||
|---|---|---|---|
| Moderate density |
High density |
Total | |
| Grapevine Springs | 79.4 | 112.0 | 191.4 |
| Staininger Spring | 20.9 | 22.5 | 43.4 |
| Surprise Springs | 4.1 | 2.2 | 6.3 |
| Total | 104.4 | 136.7 | 241.1 |
U.S.
Department of the Interior | U.S. Geological
Survey
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