Tabel 4.8 Hasil Analisis Debit Andalan Metode F.J.Mock Sub DAS Kali Pesanggrahan Tahun 2007NoURAIANSATKETBULAN

JANFEBMARAPRMEIJUNJULAGSSEPOKTNOVDES

IData meteorologi

1Hujan Bulanan (R)mm/blnData126,46521,02134,83183,9363,7770,3116,3643,2345,27116,08128,55315,46

2Hari Hujan (n)hariData132423191312354121125

IIEvaporasi Aktual (Ea)

3Evapotranspirasi Potensial (ETo)mm/blnData132,37114,80140,12143,70151,28142,80161,51169,88183,00168,95155,70151,90

4Permukaan Lahan yang Terbuka (m)%Asumsi20,0020,0020,0020,0020,0020,0020,0020,0020,0020,0020,0020,00

5Koefisien Areal (Ka)%Hitung5,006,005,001,005,006,0015,0013,0014,006,007,007,00

6Evapotranspirasi Terbatas (Ee)mm/blnHitung6,626,897,011,447,568,5724,2322,0825,6210,1410,9010,63

7Epavotranspirasi Aktual (Ea)mm/bln3 - 6125,75107,91133,11142,26143,72134,23137,28147,80157,38158,81144,80141,27

IIIKeseimbangan Air

8Keseimbangan Air (S)mm/bln1 - 80,71413,101,7241,67-79,95-63,93-120,92-104,56-112,11-42,73-16,25174,19

9Limpasan Badai (PF=5%)PF x R0,000,000,000,003,193,520,822,162,265,806,430,00

10Kandungan Air Tanah (SS)mm/blnData0,000,000,000,00-83,14-67,44-121,74-106,72-114,37-48,54-22,680,00

11Kapasitas Kelembaban Tanahmm/blnData200,00200,00200,00200,00-83,14-67,44-121,74-106,72-114,37-48,54-22,68200,00

12Kelebihan Air (WS)mm/bln8 - 90,71413,101,7241,673,193,520,822,162,265,806,43174,19

IVLimpasan dan Penyimpanan Air Tanah

13Koefisien Infiltrasi (i)Asumsi0,450,450,450,450,450,450,450,450,450,450,450,45

14Koefisien Resesi Air Tanah (k)Asumsi0,600,600,600,600,600,600,600,600,600,600,600,60

15Infiltrasi (I)mm/bln12 x 130,32185,900,7718,751,431,580,370,971,022,612,8978,39

16Volume Air Tanah (G)Htiung0,25148,720,6215,001,151,270,290,780,812,092,3162,71

17Penyimpanan Air Tanah Awal Terkoreksi (L)Hitung60,0060,0060,0060,0060,0060,0060,0060,0060,0060,0060,0060,00

18Volume Penyimpanan (Vn)17+1860,25208,7260,6275,0061,1561,2760,2960,7860,8162,0962,31122,71

19Perubahan Volume Air Tanah (Vn)Hitung-39,75108,72-39,38-25,00-38,85-38,73-39,71-39,22-39,19-37,91-37,6922,71

20Aliran Dasar (BF)mm/bln21 - 2540,0677,1840,1543,7540,2940,3240,0740,1940,2040,5240,5855,68

21Limpasan Langsung (DRo)mm/blnHitung0,39227,210,9422,924,945,451,273,353,519,009,9695,80

22Total Limpasan (TRo)mm/bln20 + 2140,45304,3941,1066,6745,2345,7741,3443,5543,7149,5250,54151,48

23Luas Daerah Aliran Sungai (A)km2Data112,06112,06112,06112,06112,06112,06112,06112,06112,06112,06112,06112,06

24Debit Sungai Tersedia (Q)m3/detHitung1,6914,101,722,881,891,981,731,821,892,072,196,34