TABLE 1.

Characteristics of stream water sampling sites, 2002 to 2003

Stream water sitea	Stream flow conditionb	Land use	Potential sources of fecal contaminationc	Drainage area (square miles)	Population density (people/square mile)	Stream flow at time of sampling (cubic feet/s)f
Alabama 1	Elevated	Mixed (agricultural and forest)	Feedlots and septic systems	374	33,000	163
Alabama 2ad	Elevated	Agricultural	Free-range cattle and septic systems	29	2,100	36
Alabama 2bd	Elevated	Agricultural	Free-range cattle and septic systems	29	2,100	44
Colorado 1e	Effluent	Agricultural	CAFOs, applied manure, wildlife, and septic systems	567	5.9	NA
Colorado 2	Elevated	Mixed (forest, rangeland, agricultural, and urban)	WWTPs, CAFOs, applied manure, and wildlife	9,598	300	628
Georgia 1	Base	Mixed (urban, forest, and agricultural)	Large urban WWTP and combined-sewer overflows	2,060	690	1,140
Georgia 1	High	Mixed (urban, forest, and agricultural)	Large urban WWTP and combined-sewer overflows	2,060	690	8,400
Georgia 2	High	Urban residential	Septic systems	29	2,100	183
Indiana	Elevated	Agricultural	Cows, septic systems, and WWTPs	610	61	142
Iowad	Base	Agricultural	Hog CAFOs and manure	230	16	48
Iowad	High	Agricultural	Hog CAFOs and manure	230	16	967
Louisianad	Base	Urban residential and commercial	WWTP and combined-sewer overflows	15	3,000	2.2
Louisianad	Elevated	Urban residential and commercial	WWTP and combined-sewer overflows	15	3,000	20
Nebraska	High	Agricultural	Feedlots and septic systems	369	11	153
Nebraska	Base	Agricultural	Feedlots and septic systems	369	11	23
Ohio	Elevated	Agricultural	Cows and WWTPs	310	130	209
Ohio	High	Agricultural	Cows and WWTPs	310	130	668
South Carolina 1	Base	Agricultural	CAFOs	23	210	7.4
South Carolina 1	Elevated	Agricultural	CAFOs	23	210	15
South Carolina 2	Elevated	Urban	WWTPs, street runoff, and raw sewage	60	1,800	65
Texas	Elevated	Mixed (urban and agricultural)	WWTPs, street runoff, and raw sewage	6,278	410	4,030
Texas	Base	Mixed (urban and agricultural)	WWTPs, street runoff, and raw sewage	6,278	410	340
Virginia 1	Base	Urban residential and commercial	Wildlife, recreation, and WWTPs	24	110,000	2.2
Virginia 2d	Elevated	Agricultural	Feedlots and septic systems	14	110	14
Washington 1ad	Base	Agricultural	Dairy CAFOs and applied manure	62	49	53
Washington 1bd	Base	Agricultural	Dairy CAFOs and applied manure	62	49	38
Washington 2	High	Urban residential and commercial	WWTPs, street runoff, and wildlife	12	5,600	31
Wisconsin 1	High	Agricultural	Septic systems, dairy farms, and WWTPs	96	85	155
Wisconsin 2	Base	Mixed (urban and agricultural)	Septic systems, feedlots, applied manure, and WWTPs	696	520	88
Wisconsin 2	High	Mixed (urban and agricultural)	Septic systems, feedlots, applied manure, and WWTPs	696	520	993

^aIf two sites were in the same state, they are labeled as state 1 and state 2. If two samples were collected at the same site and streamflow category, they are labeled as “a” and “b.”

^bHigh, streamflow was greater than 90% of all measured streamflows at that site; elevated, streamflow was between 50 and 90% of all measured streamflows at that site; base, streamflow was less than 50% of all measured streamflows at that site.

^cCAFO, concentrated animal feeding operation; WWTP, wastewater treatment plant.

^dTen-year period of record data was not available, so streamflow categories were estimated.

^eSample was collected from a drainage ditch on a cattle feedlot.

^fNA, not applicable.