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~/Mb l~i1l~ 1a,94f/rZ <br /> i~E3.~~E ~~iuP~ <br /> 2/z~ja6 <br />Chapter 2 Estimating Rmtoff Tecfudc-al Release :i+ <br /> tid ttm Hcdtuh~n• for Snudl R'mcivtrwk <br />Table 2-2c Ruuoff ettn•c numbers for olhcr xgrirulhtnd ]amts f/ <br />t~ 0 a~~J ~ /)/f~j <br />~/° <br /> Curve ntmtbets for <br />- Cover description hydrologic soil group <br />Hydrologic <br />Cover type condition A B C ^ <br />Pasl«rc, gtxsslaud, u)'rutgc-eonliuuuus Poor (i8 78 8(i S) <br />forage Gn'gtazitq;.J Fau- ~1'J T9 3~1 <br />Guaxl t38 Gl 7d 80 <br />Meadow-continuous gress, Protected from - 71 78 <br />graving and generally mowed for hay. <br />BI'1L51t-11/YLtifl-\rl`MI-gl'aS51111S11nL` wIR! bRLYh PUDl' :13 61 77 £i3 <br />Hu• uttljoc clcutcul~ Fair a5 5(i 70 47 <br />Gutxl sou •13 a> 7;3 <br />R'ouds--gtvxs eond>itWCou (orrlmrd Pcxu 57 73 82 81i <br />or Irce l:unq.= Fair 48 G5 7(i SP <br />Guai :.3 &5 72 79 <br />Woods. y Poor ~Li (iG 77 8:3 <br />Fair 3fi fib 73 7!1 <br />Gootl :301' S5 70 77 <br />Fam~steads--buildings, lanes, drivewads, - 58 74 82 86 <br />and surrounding lots. <br />t Average nmoltcondition,and y = 025. <br />% Poor.• <5096)gmund cover or Heavily graced with no rmdch. <br />Fair. 50 [0 7.9M ground cover and not heavi~v grazed. <br />('.cod.' > 7596 ground cover and lightly or only occasionally grazed. <br />a Poor. <6096ground cover. <br />Fair. 50 to 7:316 ground cover. <br />Caod.' >7596ground cover. <br />+ Actual cura'e number is less Wan 30; use CN = 80 forrunoNcomputadons. <br />~~ CN's shown were emnputed for areas wiN 5036 woods and 5(196 grass (pashue) cover. Other crombinations of condidoas may be computed <br />from the CN's for woofs and pasture. <br />~ Poor. Forest Otter, small trees, and brush are destroyed by heavygrazing or regular burning. <br />Fair. Woods are grazed but not burned, and some forest litter covers the soil <br />C,'ood.• Woods are protected from grazing, and litter and bntslt adequately cover theso8. <br />~'f ~h~ Q1fa/ru GN = qo <br />(210.Y7-TR~.5, Second Ed., Jurre 1986) 2-7 <br />