USGS WRIR 98-4222: Table 4

Pesticides in Streams of the United States--Initial Results from the National Water-Quality Assessment Program

By Steven J. Larson, Robert J. Gilliom, and Paul D. Capel

U.S. GEOLOGICAL SURVEY
Water-Resources Investigations Report 98-4222
Sacramento, California, 1999

Table 4

Table 4. Agricultural land use in agricultural indicator basins

[Crop group classifications are based on the classification system developed by Gilliom and Thelin (1997). Crop data are derived from the 1992 Census of Agriculture (U.S. Department of Commerce, 1995) and the U.S. Geological Survey Land Use land Cover database (U.S. Geological Survey, 1990). In the crop group codes, upper case letters indicate crops that account for greater than 20 percent of the row crop area in the basin; lower case letters indicate crops that account for greater than 10 percent to 20 percent. C, corn; A, alfalfa; S, soybeans; W, wheat and small grains; P, peanuts; pot, potatoes; COT, cotton; FG, field crop and grass seed; v, vegetables; sor, sorghum; b, dry beans and peas; tob, tobacco; O, site classified on the basis of orchard—vineyard crops rather than row crops; XX, basin not classified because of low row crop and orchard—vineyard area. >, actual value is greater than value shown]

Site code	Crop group classification	Crop group code	Percentage of orchard vine yard land in basin	Percentage of cropland in basin	Percent of total row crop area planted in specific crops
					Alfalfa	Corn	Cotton	Dry beans/peas	Field/grass seed	Peanuts	Potatoes	Rice	Sorghum	Soybeans	Sugar beets	Tobacco	Vegetables	Wheat/small grains
lsus-mill	Corn > 50	C	0.0	69	18	59	0	0	0	0	0	0	0	8	0	3	2	9
cnbr-prairie	Corn > 50	C	0.0	84	7	81	0	0	0	0	0	0	3	8	0	0	0	2
wmic-duck	Corn > 50	C	0.0	85	18	58	0	0	0	0	0	0	0	8	0	0	7	9
hdsn-canaj	Corn and alfalfa > 20	CA	0.0	54	50	44	0	0	0	0	0	0	0	1	0	0	1	3
poto-muddy	Corn and alfalfa > 20	CA	0.7	44	23	64	0	0	0	0	0	0	0	4	0	0	0	8
wmic-nbmilw	Corn and alfalfa > 20; vegetables > 10	CAv	0.0	83	26	41	0	0	0	0	0	0	0	6	0	0	12	15
cnbr-maple	Corn and soybeans > 20	CS	0.0	92	7	57	0	0	0	0	0	0	2	31	0	0	0	2
cnbr-shell	Corn and soybeans > 20	CS	0.0	89	6	67	0	0	0	0	0	0	1	24	0	0	0	2
whit-kess	Corn and soybeans > 20	CS	0.2	91	1	45	0	0	0	0	0	0	1	37	0	0	2	15
whit-sugar	Corn and soybeans > 20	CS	0.0	93	2	48	0	0	0	0	0	0	0	46	0	0	0	4
albe-pete	Corn and soybeans > 20; Cotton > 10	CScot	0.0	57	0	26	20	0	0	12	0	0	0	26	0	7	0	9
albe-albe	Corn, soybeans, wheat and other grains > 20	CSW	0.0	58	0	31	2	0	0	2	2	0	0	39	0	1	1	21
lsus-eastm	Corn, wheat and other grains > 20	CW	0.0	64	11	45	0	0	0	0	2	0	0	14	0	0	3	24
poto-mono	Corn, wheat and other grains > 20	CW	5.6	64	11	43	0	0	0	0	0	0	2	18	0	0	1	25
splt-lone	Corn, wheat and other grains > 20	CW	0.0	31	16	34	0	6	0	0	1	0	1	0	4	0	3	35
acfb-lime	Corn, wheat and other grains > 20; peanuts > 10	CWp	0.8	61	0	22	10	0	0	28	0	0	4	13	0	0	4	20
trin-chamb	Corn, wheat and other grains > 20; sorghum > 10	CWsor	0.0	63	1	25	28	0	0	0	0	0	31	0	0	0	0	15
ccpt-crab.rl	Wheat and other grains, alfalfa > 20	WA	0.2	93	21	6	0	5	1	0	7	0	0	0	0	0	9	50
usnk-rock	Wheat and other grains, alfalfa > 20; dried beans and peas > 10	WAb	0.0	22	22	6	0	23	0	0	5	0	0	0	7	0	5	32

Pesticide National Synthesis Project

Pesticides in Streams of the United States--Initial Results from the National Water-Quality Assessment Program