1. Dep. of Soil & Crop Sciences; Colorado State University; Fort Collins CO 80523-1170
2. USDA-Agricultural Research Service; Southeast Watershed Research Laboratory; Tifton GA 31793-0946
3. Dep. of Civil Engineering; Colorado State University; Fort Collins CO 80523-1372
4. USDA-Agricultural Research Service; Great Plains Systems Research Unit; 2150 Centre Ave., Bldg. D, Ste. 200 Fort Collins CO 80526