Table 1. Fraction (%) of Area Depending on the Land-use and Hydrologic Soil Group, and Min/Max SCS-CN Depending on the NRCS Cover Types.

Landuse	Fraction (%)	NRCS cover type description (cover type and hydrologic condition)	Max./Min.	Hydrologic soil group and runoff curve number (CN)
				A (1.5%)	B (40.4%)	C (28.6%)	D (29.5%)
Forest	39.6	Wood-Good	Min.	30	55	70	77
		Wood-grass combination-Poor	Max.	57	73	82	86
Grassland / herbaceous	25.7	Meadow-continuous grass, protected from grazing and generally mowed for hay-Good	Min.	30	58	71	78
		Pasture, grassland, or range continuous forage for grazing-Poor	Max	68	79	86	89
Cultivated crops	9.9	Row crops: Contoured & terraced-Good	Min.	62	71	78	81
		Row crops: Straight row-Poor	Max	72	81	88	91
Pasture / hay	8.4	Meadow-continuous grass, protected from grazing and generally mowed for hay-Good	Min.	30	58	71	78
		Pasture, grassland, or range continuous forage for grazing-Poor	Max	68	79	86	89
Shrub / scrub	7.1	Brush-brush-frobs-grass mixture with brush the major element-Good	Min.	30	48	65	73
		Desert shrub-major plants (saltbrush, grease wood, creosotebush, blackbrush, etc.)	Max	63	77	85	88