Environmental Engineering Reference
In-Depth Information
Columbia
Plateau
Snake River
Basin
We stern
High Plains
Central
California
Valley
Ecoregion boundary
2,025 ha decrease
2,025 ha increase
Sonoran
Basin and Range
Mississippi
Alluvial Plain
We stern Gulf
Coastal Plain
FIGURE 1.7
Changes in irrigated lands, 1947-1997. (From Hirsch, R.M., USGS science in support of water resources management, Presented at the Mississippi Water
Resources Conference, April 25-26, Jackson, MS, 2006.)
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