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<br />Cover (C~): <br />CC = (U1 x V2 x U18)1/3 <br />k <br />Water Quality (CWQ). - <br />-- - <br />s <br />...._. _ - <br />+ V7 + 2(Ug) + Ug + V13 <br />3 <br />cWQ = ~ <br />If U5, V12i U14 Ve, V9, or U13 is <_ 0.4, then CWQ equals the lowest <br />____._~x__.:..„_M of-~the~-following: Vs,"U12~_,_.U14,~~8~ U9~,~Vi3,~or the~~above equat-ion.--- <br />Note: If temperature data are unavailable, 2(V6) (length of agricul- <br />tural;growing season) may be substituted for the term <br />2\VS + V12 + vl4) <br />3 in the above equation <br />RPnrnduction (C..l: <br />CR = (U1 X V22 X Ug2 X V102 X V11)1/8 <br />If Vei Ulo, or V11 is <_ 0.4, then CR equals the lowest of the <br />following: V6i Ulo, U11i or the above equation. <br />HSI determination. <br />HSI = (CF x CC x CWQ2 x CR2)1/6 <br />or <br />If CWQ or CR is <_ 0.4, then the HSI equals the lowest of the <br />following: CWQ, CR, or the above equation. <br />~~ <br /> <br />16 <br />