Data Series 345
U.S. GEOLOGICAL SURVEY
Data Series 345
Table 1. Summary of dominant study area features for the five study areas of the Nutrient Enrichment Effects on Stream Ecosystems Study of the National Water Quality Assessment Program, 2003–04.
[Study areas: ACFB/GAFL, Apalochicola-Chattahoochee-Flint River Basin and Georgia-Florida Coastal Plain Drainages; CCYK, Central Columbia Plateau-Yakima River Basin; CNBR, Central Nebraska Basins; PODL, Potomac River-Delmarva Peninsula; WHMI, White-Miami River Basin. Values in parentheses ( ) are the ranges (minimum and maximum. km2, square kilometer]
| Dominant study area features | Study areas | ||||
|---|---|---|---|---|---|
| ACFB/GAFL | CCYK | CNBR | PODL | WHMI | |
| Number of sites | 29 | 29 | 28 | 27 | 30 |
| Climate | Humid plains | Arid plains and plateaus | Semi-humid plains | Humid plains | Semi-humid plains |
| Agricultural region | Corn soybeans, peanuts, vegetables, pasture, cotton | Wheat grains, alfalfa, potatoes, vegetables | Corn, soybeans | Corn, alfalfa, soybeans, pasture | Corn, soybeans |
| EPA Level III Ecoregion | Southeastern Plains | Columbia Plateau | Central Great Plains | Middle Atlantic Coastal Plains | Eastern Cornbelt Plains |
| Basin size (km2) | 145.9 (54.7–300) |
652.0 (3.2–6,378.8) |
443.6 (49.6–1,759) |
14.5 (4.4–41.1) |
97.5 (36.6–340.1) |
| Percent agriculture | 42.9 (7–76) |
26.4 (0–95.4) |
58.1 (16.9–97.0) |
53.1 (9.9–89.5) |
90.2 (75.5–98.4) |
U.S. Department of the Interior | U.S. Geological Survey
URL: https://pubs.usgs.gov/ds/345
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