Tugas Hidrologi ke 3 (Dalam Proses)

	No. NIM : 10.04.111.1052
	L = 3,x		X = Akhir Nim		X = 2
			Y = Jumlah 2 angka terakhir		Y = 5+2 = 7
	A = 64 Km 2 (DAS)
	ELEVASI Hilir = 10, 2
	ELEVASI HULU = 28,7
Data Curah Hujan
No.	Tahun	R (mm)
		Genap
1	1998	100
2	1999	80
3	2000	70
4	2001	92
5	2002	100
6	2003	110
7	2004	73
8	2005	75
9	2006	78
10	2007	93
11	2008	104
12	2009	117
13	2010	115
14	2011	180
PENYELESAIAN
Untuk Curah Hujan Rata-rata memkai Metode:
1. METODE  NORMAL
NO	TAHUN	R (mm)	(R-Rr)	(R-Rr)2
1	1998	100	0.93	0.8622
2	1999	80	-19.07	363.7194
3	2000	70	-29.07	845.1480
4	2001	92	-7.07	50.0051
5	2002	100	0.93	0.8622
6	2003	110	10.93	119.4337
7	2004	73	-26.07	679.7194
8	2005	75	-24.07	579.4337
9	2006	78	-21.07	444.0051
10	2007	93	-6.07	36.8622
11	2008	104	4.93	24.2908
12	2009	117	17.93	321.4337
13	2010	115	15.93	253.7194
14	2011	180	80.93	6549.4337
JUMLAH		1387		10268.9286
RATA-RATA (Rr)		99.07
Standart Deviasi (Sx)		28.1055
	Perhitungan Curah Hujan Periode Ulang T tahun (Rt)
No.	Periode Ulang	Rr	Sx	Kt	Rt
1	2	99.07	28.1055	0.000	99.07
2	5	99.07	28.1055	0.842	122.734831
3	10	99.07	28.1055	1.282	135.101251
4	20	99.07	28.1055	1.5165	141.6919908
5	25	99.07	28.1055	1.751	148.2827305
6	50	99.07	28.1055	2.054	156.798697
7	100	99.07	28.1055	2.326	164.443393
2. METODE LOG NORMAL
Perhitungan Standart Deviasi
No.	Tahun	R(mm)	Log R	(Log R-Log Rr)	(Log R-Log Rr)2
1	1998	100	2.0000	0.0176	0.0003
2	1999	80	1.9031	-0.0793	0.0063
3	2000	70	1.8451	-0.1373	0.0189
4	2001	92	1.9638	-0.0186	0.0003
5	2002	100	2.0000	0.0176	0.0003
6	2003	110	2.0414	0.0590	0.0035
7	2004	73	1.8633	-0.1191	0.0142
8	2005	75	1.8751	-0.1073	0.0115
9	2006	78	1.8921	-0.0903	0.0082
10	2007	93	1.9685	-0.0139	0.0002
11	2008	104	2.0170	0.0346	0.0012
12	2009	117	2.0682	0.0858	0.0074
13	2010	115	2.0607	0.0783	0.0061
14	2011	180	2.2553	0.2729	0.0745
Jumlah		1387	27.7535		0.1528
Rata-Rata		99.07	1.9824
Standart Deviasi (Sx)			0.1084
Perhitungan Curah hujan Periode ulang T tahun (Rt)
No.	Periode Ulang	Kt	Log Rt	RT
1	2	0.000	1.982	96.027
2	5	0.842	2.074	118.486
3	10	1.282	2.121	132.240
4	20	1.5165	2.147	140.211
5	25	1.751	2.172	148.663
6	50	2.054	2.205	160.342
7	7	100	2.326	2.235	171.606
3. METODE GUMBEL
Perhitungan Standart Deviasi
No.	Tahun	R(mm)	R-Rr	(R-Rr)2
1	1998	100	0.93	0.8622
2	1999	80	-19.07	363.7194
3	2000	70	-29.07	845.1480
4	2001	92	-7.07	50.0051
5	2002	100	0.93	0.8622
6	2003	110	10.93	119.4337
7	2004	73	-26.07	679.7194
8	2005	75	-24.07	579.4337
9	2006	78	-21.07	444.0051
10	2007	93	-6.07	36.8622
11	2008	104	4.93	24.2908
12	2009	117	17.93	321.4337
13	2010	115	15.93	253.7194
14	2011	180	80.93	6549.4337
Jumlah		1387		10268.9286
Rata-rata (Rr)		99.07
Standart Deviasi (Sx)		28.1055
	n = 14 tahun
	Y14 =	0.5100
	S14 =	1.0095
Perhitungan Curah Hujan Periode Ulang T Tahun
No	Periode Ulang	Yt	(Yt-Y14)	Yt-Y14	Rt
	Tahun			S14
1	2	0.3665	-0.1435	-0.1421	95.0762
2	5	1.4999	0.9899	0.9806	126.6312
3	10	2.2502	1.7402	1.7238	147.5204
4	20	2.9606	2.4506	2.4275	167.2986
5	25	3.1985	2.6885	2.6632	173.9220
6	50	3.9019	3.3919	3.3600	193.5054
7	100	4.6001	4.0901	4.0516	212.9439
4. METODE LOG PEARSON TYPE III
Perhitungan standart Deviasi
No.	Tahun	R(mm)	Log R	(Log R-Log Rr)	(Log R-Log Rr)2	(Log R-Log Rr)3
1	1998	100	2.0000	0.0176	0.0003	0.0000
2	1999	80	1.9031	-0.0793	0.0063	-0.0005
3	2000	70	1.8451	-0.1373	0.0189	-0.0026
4	2001	92	1.9638	-0.0186	0.0003	0.0000
5	2002	100	2.0000	0.0176	0.0003	0.0000
6	2003	110	2.0414	0.0590	0.0035	0.0002
7	2004	73	1.8633	-0.1191	0.0142	-0.0017
8	2005	75	1.8751	-0.1073	0.0115	-0.0012
9	2006	78	1.8921	-0.0903	0.0082	-0.0007
10	2007	93	1.9685	-0.0139	0.0002	0.0000
11	2008	104	2.0170	0.0346	0.0012	0.0000
12	2009	117	2.0682	0.0858	0.0074	0.0006
13	2010	115	2.0607	0.0783	0.0061	0.0005
14	2011	180	2.2553	0.2729	0.0745	0.0203
Jumlah		1387	27.7535		0.1528	0.0149
Rata-Rata (Rr)		99.07	1.9824
Standart Deviasi (sx)			0.1084	Koefisien Asimetris (Cs)