APPENDIX G SUPPORTING DATA FOR ALTERATIVES ANALYSIS

APPENDIX G
SUPPORTING DATA FOR ALTERATIVES ANALYSIS
Daily Flow Calculations Methodology
for Alternatives Evaluation
Big Sur River Zone 4 to Zone 2 Estimated Daily Flow
USGS Big Sur River gage daily flow rate records, from 1985 to 2004, were used
to estimate flow entering Zone 4 within the study area. A linear relationship
between USGS flow and measured unimpaired flow was determined to be
(Figure 3-35 SGI 2008):
Qunimpaired entering Zone 4 = 1.3352*USGS flow rate – 7.771 (cfs)
Estimated groundwater accretion between Zone 4 and Zone 2 is about 1.7 cfs
Therefore, unimpaired flow from Zone 4 through Zone 2 was estimated as:
Qunimpaired through Zone 4 to Zone 2 = 1.3352*USGS flow rate – 7.771 +
1.7 (cfs)
Synthetic Daily Flow
For all diversion conditions:
ƒ
ƒ
ƒ
ƒ
If unimpaired flow rate was 0, no diversion was applied
A river flow loss of 0.24 cfs per 1.0 cfs diverted was assumed (Table 3-1
SGI 2008)
If calculated flow rates were less than 0, a flow rate of 0 was assumed.
If the diversion reduced river flow to less than 0, a river flow rate of 0 was
assumed
Diversion Rate Estimation
Baseline Conditions
Historic monthly average diversion rate, for each year from 1985 through
2004, was used to determine Baseline flow rate Big Sur River Zone 4
through Zone 2 flow rate losses (see El Sur Ranch Monthly Pumping
(cfs)). The average diversion rate for each month was applied to each day
for the entire month for the applicable year.
G-1
Proposed Project
Maximum application diversion rates for May through October (Table 6-1
this DEIR), and annual monthly maximum diversion rate for May and June
were used to estimate proposed project effects on Big Sur River Zone 4
through Zone 2 daily flow rates. The remainder of the application
allotment was divided equally among the remaining winter months. The
table below lists the monthly average diversion rate per day was applied to
each day of the month for each year.
TABLE 1
DIVERSION RATES USED FOR
PROPOSED PROJECT DAILY
FLOW SIMULATION
Month
Diversion Rate
cfs
January
February
March
April
May
June
July
August
September
October
November
December
0.5
0.5
0.5
0.5
5.34
5.34
3.01
3.01
3.01
3.01
0.5
0.5
No Project Alternative (NPA)
The NPA was assumed to use the same irrigation strategy as historic
conditions. Therefore, the application of irrigation water was assumed to
be 9 percent of historic uses (25 acres/267 acres). Historic monthly
average diversion rate, for each year from 1985 through 2004, was
reduced to 9 percent of historic values and these diversion rates (see El
Sur Ranch Monthly Pumping (cfs)) were used to determine flow rate
losses in Big Sur River Zone 4 through Zone 2 for the NPA. The average
diversion rate for each month was applied to each day for the entire month
for the applicable year.
Alternate Irrigation Efficiency (AIE)
The AIE assumed an average irrigation efficiency of 80 percent. Historic
records of irrigation use were adjusted to reflect an 80 percent irrigation
efficiency, compared to historic uses (see Historic Required Irrigation).
G-2
This historic required irrigation at 80 percent efficiency rate, for each year
from 1985 through 2004, was used for the diversion rates were used to
determine flow rate Zone 4 through Zone 2 Big Sur River flow losses. The
average diversion rate for each month was applied to each day for the
entire month for the applicable year.
Frequency Analysis
A frequency analysis was performed for flow rates in the 20-year synthetic daily
flow record (adjusted for the various diversion scenarios as described above).
The frequency analysis was used to determine Bankful and Flood flow rates, and
critical (0 and 1 cfs) non-exceedence probabilities.
The Bankful flow was estimated as the 1.5-year, 2.0-year, or 2.5-year return
period flow, which have a probability of 66.7, 50, and 40 percent, respectively,
chance of occurrence in any given year. Flood flow was estimated as the 10year return flow (10 percent chance of occurrence in any given year).
In addition to the annual critical non-exceedence probability, critical nonexceedence flow probability was also evaluated for the month of November for
the 20-year synthetic daily flow record.
TABLE 2
FLOW RATES FOR CHANNEL FORMING FACTORS AND FREQUENCY FOR NON-EXCEEDENCE OF
CRITICAL FLOW RATES
No Project Alternative
Difference
Baseline/
Historic
cfs
Proposed
Project/
Alternative
Limits on
Diversions
cfs
No Project
Alternative
cfs
257.2
257.0
257.2
0.01
0.26
41.02
28.21
18.02
40.86
28.29
17.91
41.91
28.61
18.24
0.89
0.4
0.22
Critical Flow (Frequency of Non-Exceedence)
1 cfs
1.94
2.3
1.48
0 cfs
1.08
1.23
0.92
-0.46
-0.16
Flow
Condition
cfs
Flood
10-year
Bankful
2.5-year
2.0-year
1.5-year
Baseline
cfs
G-3
Proposed
Project
cfs
Alternative Irrigation
Efficiency Difference
Alternate
Irrigation
Efficiency
cfs
Baseline
cfs
Propose
d Project
cfs
257.2
0.01
0.26
1.05
0.32
0.33
41.45
28.20
18.13
0.43
-0.01
0.11
0.59
-0.09
0.22
-0.82
-0.31
1.97
1.07
0.03
-0.01
-0.33
-0.16
TABLE 3
IRRIGATION SEASON DIVERSION EFFECT ON BIG SUR RIVER FLOW LOSS
Baseline
cfs
No Project
Alternative
cfs
Historic
Diversions
cfs
Alternative
Irrigation
Efficiency
cfs
3.87
0.42
4.52
2.24
3.87
3.01
0.21
2.21
1.76
3.01
0.70
0.08
0.81
0.40
0.70
0.54
0.04
0.40
0.32
0.54
-0.12
-0.74
0.00
-0.41
-0.12
0.14
-0.36
0.00
-0.08
0.14
--
-0.62
0.12
-0.29
0.00
--
-0.50
-0.14
-0.23
0.00
Proposed
Project
cfs
Alternative
Limits on
Diversions
cfs
Diversiona
Monthly
4.52
Maximum
Seasonal
2.21
Average
BSR Flow Lossb
Monthly
0.81
Maximum
Seasonal
0.40
Average
Difference from Baseline
Monthly
-Maximum
Seasonal
-Average
Difference from Proposed Project
Monthly
-Maximum
Seasonal
-Average
Notes:
aFrom Table 6-1
bWhere Big Sur River (BSR) Flow Loss is estimated as 0.16 cfs per 1.0 cfs diverted (See Section 4.2, Impact 4.2-2, gradient method)
-- = not applicable
G-4
El Sur Ranch Baseline (1985-2004) Irrigation
Jan
Feb
Count
20
20
Monthly Average Pumping Volume
AF
AF
Minimum
0
0
25th percentile
0
0
Median
0
0
75th percentile
0
0
Maximum
17
0
Mean
0.8
0
Standard Deviation
4
0
Monthly Average Pumping Rate
cfs
cfs
Minimum
0
0
25th percentile
0
0
Median
0
0
75th percentile
0
0
Maximum
0.27
0
Mean
0.01
0
Standard Deviation
0.10
0
Mar
Apr
20
AF
May
20
AF
0
0
0
0
0.6
0
0.1
cfs
0
0
0
0
0.01
0
0
20
AF
0
0
0
0.1
239
25
60.4
cfs
0
0
0
0
4.01
0.42
1.02
Jun
Jul
20
AF
Aug
20
AF
Sep
20
AF
Oct
20
AF
20
AF
0
37
96
152
267
104
84
20
114
176
218
339
172
83
60
105
148
194
264
152
57
71
103
130
179
218
143
46
32
120
152
190
269
155
54
0
0.60
1.56
2.47
4.35
1.69
1.36
cfs
0.34
1.92
2.96
3.67
5.70
2.89
1.40
cfs
0.98
1.71
2.41
3.15
4.29
2.48
0.93
cfs
1.15
1.68
2.12
2.91
3.55
2.32
0.75
cfs
0.54
2.01
2.56
3.20
4.52
2.60
0.91
cfs
Nov
Dec
20
AF
0
34
93
121
215
90
62
cfs
0
0.55
1.52
1.97
3.50
1.47
1.01
20
AF
0
0
0
6
76
12
24
cfs
0
0
0
0.10
1.27
0.20
0.41
0
0
0
0
57
3
13
cfs
0
0
0
0
0.93
0.05
0.21
El Sur Ranch Monthly Pumping (inches)
days
Year
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
Average
1985 - 2004
31
Jan
28
31
30
31
30
31
31
30
31
30
31
1.55
0.05
0.00
Mar
2.13
6.19
0.03
0.28
0.00
Apr
2.62
9.12
10.86
10.72
2.25
0.03
5.27
4.20
1.50
1.12
May
1.63
9.53
8.87
7.38
2.65
1.02
6.41
5.42
0.64
11.74
10.81
4.73
0.94
1.60
6.44
2.32
12.02
7.16
5.00
3.90
5.78
6.72
3.84
1.66
1.77
7.24
0.28
11.39
4.96
4.68
Jun
8.66
8.34
10.24
6.87
10.27
10.14
9.17
8.99
0.64
11.77
12.22
15.24
12.33
11.93
3.18
2.78
8.83
11.55
8.00
6.26
3.72
7.35
5.51
0.91
3.98
9.23
8.45
7.81
6.47
8.96
7.99
7.74
Jul
9.26
8.51
8.10
5.61
9.29
8.79
9.67
9.09
9.37
11.39
10.36
8.51
11.86
3.04
4.15
2.71
8.57
5.22
9.09
4.59
10.11
7.65
4.20
6.30
4.75
5.78
7.82
6.05
9.20
7.02
7.54
6.85
Aug
9.23
9.04
8.54
5.61
9.37
8.46
10.34
8.26
5.97
13.51
9.42
8.95
9.23
3.18
3.54
7.79
6.08
4.45
9.81
4.59
6.99
8.26
4.37
5.55
7.96
5.22
5.22
4.67
5.61
7.27
7.22
6.41
Sep
5.96
8.50
8.24
9.92
7.54
8.37
7.19
9.15
2.73
7.94
1.44
5.70
8.83
4.47
7.25
12.09
5.21
10.83
6.61
8.16
9.04
8.53
5.43
4.92
5.70
8.61
7.09
4.73
6.36
7.94
7.15
6.95
Oct
2.82
1.80
4.86
6.88
7.30
3.37
4.17
6.11
2.04
9.56
0.44
9.67
6.02
8.95
7.65
5.33
3.92
1.46
5.00
5.78
4.42
3.18
4.06
1.55
0.94
3.95
4.59
4.31
4.34
4.06
Nov
0.03
2.30
5.38
4.84
0.05
2.35
3.40
2.86
0.38
0.21
1.66
0.78
0.54
Dec
0.14
2.87
1.66
2.57
0.24
0.13
Feb
0.14
1.33
0.75
0.07
0.04
Monthly Irrigation Pumping Table 6-10 Beneficial Use Study, 2005
8/29/2008
E:\El Sur\2005 Flow data (July to October)2004.xls-in
365
Total
Total
July to
Irrigation Irrigation
October
Irrigation (in)
(AF)
(in)
840
37.7
27.3
1,212
54.5
27.8
1,611
72.4
29.7
941
42.3
28.0
1,033
46.4
33.5
1,038
46.6
29.0
1,045
47.0
31.4
1,047
47.1
32.6
476
21.4
20.1
1,738
78.1
42.4
985
44.3
21.2
1,012
45.5
23.2
950
42.7
30.4
1,053
47.3
20.4
573
25.7
21.0
1,021
45.9
31.5
934
42.0
27.5
1,099
49.4
25.8
993
44.6
29.4
669
30.1
18.8
862
38.8
31.1
973
43.7
30.2
799
35.9
18.4
469
21.1
20.0
675
30.3
22.5
713
32.0
21.2
696
31.3
21.1
767
34.5
19.4
760
34.2
25.8
1,137
51.1
26.5
937
42.1
26.2
857
38.5
24.3
= Baseline Max
1
El Sur Ranch Monthly Pumping (cfs)
days
Year
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
Average
1985-2004
31
Jan
28
Feb
0.05
0.48
0.27
0.03
0.01
0.62
0.02
0.00
31
Mar
0.77
2.24
0.01
0.10
0.00
30
Apr
0.98
3.41
4.06
4.01
0.84
0.01
1.97
1.57
0.56
0.42
31
May
0.59
3.45
3.21
2.67
0.96
0.37
2.32
1.96
0.23
4.25
3.91
1.71
0.34
0.58
2.33
0.84
4.35
2.59
1.81
1.41
2.09
2.43
1.39
0.60
0.64
2.62
0.10
4.12
1.80
1.69
Monthly Irrigation Pumping Table 6-10 Beneficial Use Study, 2005
8/29/2008
E:\El Sur\2005 Flow data (July to October)2004.xls-cfs
30
Jun
3.24
3.12
3.83
2.57
3.84
3.79
3.43
3.36
0.24
4.40
4.57
5.70
4.61
4.46
1.19
1.04
3.30
4.32
2.99
2.34
1.39
2.75
2.06
0.34
1.49
3.45
3.16
2.92
2.42
3.35
2.99
2.89
31
Jul
3.35
3.08
2.93
2.03
3.36
3.18
3.50
3.29
3.39
4.12
3.75
3.08
4.29
1.10
1.50
0.98
3.10
1.89
3.29
1.66
3.66
2.77
1.52
2.28
1.72
2.09
2.83
2.19
3.33
2.54
2.73
2.48
31
Aug
3.34
3.27
3.09
2.03
3.39
3.06
3.74
2.99
2.16
4.89
3.41
3.24
3.34
1.15
1.28
2.82
2.20
1.61
3.55
1.66
2.53
2.99
1.58
2.01
2.88
1.89
1.89
1.69
2.03
2.63
2.61
2.32
30
Sep
2.23
3.18
3.08
3.71
2.82
3.13
2.69
3.42
1.02
2.97
0.54
2.13
3.30
1.67
2.71
4.52
1.95
4.05
2.47
3.05
3.38
3.19
2.03
1.84
2.13
3.22
2.65
1.77
2.38
2.97
2.67
2.60
31
Oct
1.02
0.65
1.76
2.49
2.64
1.22
1.51
2.21
0.74
3.46
0.16
3.50
2.18
3.24
2.77
1.93
1.42
0.53
1.81
2.09
1.60
1.15
1.47
0.56
0.34
1.43
1.66
1.56
1.57
1.47
30
Nov
0.01
0.86
2.01
1.81
0.02
0.88
1.27
1.07
0.14
0.08
0.62
0.29
0.20
31
365
Annual
Average
Dec
(cfs)
0.05
1.16
1.67
1.04
2.23
1.30
1.43
0.60
1.43
1.44
1.45
0.66
2.40
1.36
1.40
1.31
1.46
0.79
1.41
0.93
1.29
1.52
1.37
0.92
1.19
1.34
1.10
0.65
0.93
0.98
0.96
1.06
1.05
1.57
0.09
1.29
0.05
1.18
Annual
(ac-ft)
837
1,208
1,607
938
1,030
1,035
1,042
1,044
475
1,733
982
1,009
947
1,051
571
1,018
931
1,096
990
667
860
970
797
468
673
711
694
765
758
1,134
935
855
July to
October
Irrigation
(cfs)
2.49
2.54
2.71
2.56
3.05
2.64
2.86
2.97
1.83
3.87
1.94
2.11
2.77
1.86
1.91
2.88
2.51
2.36
2.68
1.71
2.84
2.76
1.68
1.82
2.05
1.93
1.92
1.77
2.35
2.42
2.39
2.21
= Baseline Max
1
El Sur Ranch Monthly Pumping (acre-feet)
days
Year
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
Average
1985-2004
31
Jan
28
Feb
3
30
17
2
1
34
1
0
31
Mar
47
138
1
6
0
30
Apr
58
203
242
239
50
1
117
93
33
25
31
May
36
212
197
164
59
23
143
121
14
261
240
105
21
36
143
52
267
159
111
87
129
149
85
37
39
161
6
253
110
104
Monthly Irrigation Pumping Table 6-10 Beneficial Use Study, 2005
8/29/2008
E:\El Sur\2005 Flow data (July to October)2004.xls-AF
30
Jun
193
186
228
153
228
226
204
200
14
262
272
339
274
265
71
62
196
257
178
139
83
164
123
20
89
205
188
174
144
199
178
172
31
Jul
206
189
180
125
207
196
215
202
208
253
231
189
264
68
92
60
191
116
202
102
225
170
93
140
106
129
174
135
205
156
168
152
31
Aug
205
201
190
125
208
188
230
184
133
301
210
199
205
71
79
173
135
99
218
102
156
184
97
124
177
116
116
104
125
162
161
143
30
Sep
133
189
183
221
168
186
160
204
61
177
32
127
196
99
161
269
116
241
147
181
201
190
121
109
127
192
158
105
142
177
159
155
31
Oct
63
40
108
153
162
75
93
136
46
213
10
215
134
199
170
119
87
33
111
129
98
71
90
34
21
88
102
96
97
90
30
Nov
1
51
120
108
1
52
76
64
8
5
37
17
12
31
Dec
3
64
37
57
5
3
365
Total
Irrigation
(AF)
840
1,212
1,611
941
1,033
1,038
1,045
1,047
476
1,738
985
1,012
950
1,053
573
1,021
934
1,099
993
669
862
973
799
469
675
713
696
767
760
1,137
937
857
Calculated
Irrigation
July to
Requiment
October
with
Irrigation (acft)
leaching
607
576
620
938
662
999
624
589
745
604
645
689
698
551
726
433
447
472
943
989
472
587
515
670
675
602
453
844
466
506
702
817
612
601
575
713
655
646
418
612
693
578
672
591
410
800
444
460
500
538
471
537
469
529
432
612
573
599
591
660
584
614
540
625
= Baseline Max
1
1985 - 2004 Monthly Average Pumping Rates
n=20
6.0
5.5
5.0
4.5
Pumping Rate (cfs)
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
Jan
Feb
Mar
Apr
May Jun
Jul
Aug Sep
Oct
Nov Dec
1985 - 2004 Monthly Average Irrigation Volumes on 267 Acres
n=20
400
350
Irrigation (acare-feet)
300
250
200
150
100
50
0
Jan
Feb Mar
Apr
May Jun
Jul
Aug Sep
Oct
Nov Dec
HISTORIC REQUIRED IRRIGATION
Acres =
267
Similar to Table 7-8: Net Irrigation Requirement -- calculated with mean ETc (inches); Crop Requirements
Year
Jan
Feb
1
1975
1.22
0.15
2
1976
2.26
0.27
3
1977
0.91
1.87
4
1978
0.00
0.00
5
1979
0.21
0.27
6
1980
0.00
0.00
7
1981
0.00
0.83
8
1982
0.32
0.66
9
1983
0.00
0.00
10
1984
2.34
0.66
11
1985
1.42
1.43
12
1986
0.58
0.00
13
1987
0.09
0.20
14
1988
0.58
1.96
15
1989
1.06
0.85
16
1990
0.00
0.39
17
1991
1.76
0.73
18
1992
0.56
0.00
19
1993
0.00
0.03
20
1994
0.00
0.15
21
1995
0.00
1.96
22
1996
0.00
0.00
23
1997
0.00
2.48
24
1998
0.00
0.03
25
1999
0.00
0.27
26
2000
0.00
0.00
27
2001
0.09
0.27
28
2002
1.13
1.26
29
2003
1.03
0.73
30
2004
0.80
0.23
31
2005
0.44
0.36
32
2006
2.38
2.28
1985-2004 Mean
0.45
0.65
1985-2004 Maximum
1.76
2.48
Mar
0.26
1.84
1.67
0.00
0.00
1.14
0.00
0.26
0.00
2.03
0.40
0.00
0.80
3.12
0.74
1.78
0.40
0.00
0.56
2.74
0.00
0.72
3.05
0.00
0.54
1.29
1.11
1.91
2.13
2.55
3.08
0.69
1.19
3.12
Apr
2.12
2.11
3.66
0.00
3.10
2.03
2.75
0.98
0.10
2.95
2.93
3.27
3.14
1.89
2.69
2.80
3.21
3.66
2.77
2.38
1.67
2.75
3.28
0.83
1.88
2.76
1.79
3.27
1.35
3.63
3.01
0.54
2.59
3.66
May
4.44
4.44
3.28
4.44
4.17
3.88
4.30
4.44
4.21
4.23
4.14
4.00
4.36
3.81
4.13
2.71
4.24
4.44
3.58
3.61
3.86
3.11
4.38
2.02
4.44
3.63
4.44
3.39
3.51
4.44
3.97
3.67
3.81
4.44
Irrigation Requirement (Crop Requirement/Irrigation Efficiency)
1985-2004 Max AF
49
69
87
102
123
1985-2004 Days
31
28
31
30
31
1985-2004 Max cfs
0.79
1.24
1.41
1.71
2.01
Jun
5.13
5.12
5.25
5.25
5.25
5.25
5.25
4.71
5.11
5.11
4.99
5.25
5.25
4.98
5.25
5.25
5.25
5.09
4.34
5.25
3.83
5.25
5.25
4.91
4.95
5.25
5.25
5.22
5.25
5.22
5.13
5.25
5.06
5.25
Jul
4.86
4.98
4.98
4.98
4.63
4.21
4.98
4.95
4.98
4.98
4.95
4.98
4.98
4.98
4.98
4.98
4.98
4.98
4.98
4.98
4.98
4.98
4.98
4.76
4.98
4.98
4.98
4.98
4.98
4.86
4.98
4.98
4.96
4.98
146
30
2.45
138
31
2.25
Aug
3.78
3.23
4.20
4.20
4.19
4.19
4.10
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
4.20
3.97
4.17
4.20
4.20
4.20
4.20
4.00
4.20
4.20
4.20
4.17
4.20
4.20
4.20
4.20
4.20
4.18
4.20
117
31
1.90
= Max
= within
winter avg max AF
winter avg max cfs
8/29/2008 6:10 PM
73
1.22
Sep
3.77
3.37
3.14
3.51
3.77
3.76
3.77
2.43
2.57
3.77
3.67
2.89
3.77
3.77
2.87
3.77
3.77
3.77
3.77
3.77
3.77
3.77
3.77
3.58
3.62
3.38
3.71
3.77
3.77
3.71
3.77
3.77
3.63
3.77
Oct
1.87
2.79
3.28
3.36
1.75
3.36
1.55
1.36
2.91
1.57
1.92
3.30
2.31
3.25
1.86
3.28
2.18
2.73
3.27
3.07
3.36
2.37
2.81
2.80
3.22
0.24
3.21
3.36
3.12
0.46
3.36
3.36
2.60
3.36
105
30
1.76
93
31
1.52
70%
of max
Nov
2.22
2.01
2.19
0.92
0.38
2.63
0.00
0.17
0.06
0.17
0.50
2.46
1.12
0.47
1.46
2.21
2.61
2.56
1.16
0.50
2.51
0.54
0.00
0.33
1.27
2.20
0.31
0.70
1.23
1.71
1.62
1.59
1.29
2.61
73
30
1.22
Dec
1.92
0.50
0.00
0.91
0.00
0.75
0.81
0.05
0.00
0.58
0.96
0.82
0.26
0.16
2.13
0.87
0.05
0.05
0.43
0.29
0.32
0.00
0.05
0.83
2.14
1.98
0.16
0.05
0.05
0.21
0.00
0.01
0.59
2.14
59
31
0.97
Annual
31.71
32.89
34.40
27.55
27.70
31.17
28.32
24.50
24.12
32.56
31.48
31.72
30.45
33.14
32.19
32.21
33.12
31.98
29.06
30.91
30.44
27.66
34.02
24.27
31.48
29.88
29.46
33.21
31.32
31.99
33.89
32.69
31.00
34.02
946
365
1.31
Jul through
October
Irrigation
Annual (ac-ft)
(inches)
705
14.27
732
14.36
765
15.59
613
16.04
616
14.33
694
15.51
630
14.39
545
12.93
537
14.65
724
14.51
700
14.73
706
15.36
677
15.25
737
16.19
716
13.90
717
16.22
737
14.89
712
15.64
647
16.21
688
16.01
16.30
677
616
15.31
757
15.55
540
15.33
700
16.01
665
12.79
655
16.06
16.30
739
697
16.06
712
13.22
16.30
754
16.30
727
690
15.36
757
16.30
453
123
1.86
HISTORIC IRRIGATION EFFICIENCY
* based on dS/m of 0.75, per 2007 report pg. 8-3
Clover
Calc'd Leaching fraction
LF allowed loss:
10% loss
0.28
(from Tb 9-1)
1
Year
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
1985 to 2004
2
Irrig. Water Irrig. Water
supply
supply (AF)
34.7
840
50.1
1212
66.7
1611
38.9
940
42.7
1032
42.9
1038
43.3
1045
43.3
1046
19.7
476
71.9
1738
40.7
985
41.9
1012
39.3
950
43.6
1054
23.7
572
42.3
1021
38.7
934
45.5
1099
41.1
992
27.7
669
35.7
862
40.3
973
33.1
800
19.4
468
27.9
675
29.5
714
28.8
697
31.7
767
31.5
760
47.0
1136
29.9
722
17.6
426
35.46
857.03
Caveats:
Unknown number of irrigated acres
Under-irrigation is treated as 100% efficiency
Tailwater waste is not known
Irrigation uniformity is not known
8/29/2008 6:08 PM
(from Tb 7-8) (from Tb 7-11) (from Tb 9-1)
3
4
5
Irrig. For
Net Irrig.
beneficial Total Benef.
Req.
crop ETc
Use (in)
29.01
22.71
25.23
34.45
32.10
35.67
34.26
32.64
36.27
27.99
26.49
29.43
28.51
27.13
30.14
32.05
29.34
32.60
28.23
24.76
27.51
23.00
19.48
21.64
26.37
21.22
19.70
33.41
30.46
33.84
30.98
22.91
25.46
32.15
26.03
28.92
31.89
23.77
26.41
33.71
31.16
34.62
32.29
21.02
23.36
32.99
30.62
34.02
31.65
26.76
29.73
36.38
32.04
35.60
32.61
29.04
32.27
30.36
27.23
27.69
33.00
25.99
28.88
29.13
26.58
29.53
37.67
35.94
33.09
23.46
20.67
19.38
28.79
24.18
26.87
29.71
24.13
26.81
28.18
23.76
26.40
30.79
27.51
30.57
31.07
26.92
29.91
32.94
29.65
32.94
36.16
27.58
29.87
29.28
19.15
17.63
31.49
26.80
29.12
w/o 100%
1979 to 2006
1994 to 2006
1985 to 2004
(calc'd)
7
6
(calc'd)
8
Irrigation Precip.
Leaching
Efficiency Remainder requirement
73%
7.41
9.73
71%
5.18
14.04
54%
8.02
18.67
76%
17.74
10.89
71%
14.27
11.96
76%
11.45
12.02
64%
15.30
12.11
50%
23.43
12.12
100%
28.74
5.52
47%
7.86
20.13
62%
8.90
11.41
69%
8.64
11.73
67%
8.68
11.01
79%
6.48
12.21
99%
5.46
6.63
81%
6.73
11.83
77%
11.52
10.82
78%
14.34
12.74
79%
20.84
11.50
100%
8.16
7.75
81%
19.44
9.99
73%
22.48
11.27
100%
18.26
9.27
100%
33.18
5.43
96%
10.39
7.82
91%
18.02
8.27
92%
16.72
8.07
96%
10.74
8.89
95%
9.67
8.81
70%
14.52
13.17
100%
11.38
8.36
100%
7.63
4.94
84%
76%
87%
81%
(calc'd)
9
10
Additional
NEW Total
irrig. needed
Benef. Use
for LR
(in)
2.32
25.03
8.86
40.96
10.65
43.29
0.00
26.49
0.00
27.13
0.57
29.91
0.00
24.76
0.00
19.48
0.00
21.22
12.27
42.73
2.51
25.42
3.09
29.12
2.32
26.09
5.73
36.89
1.16
22.18
5.10
35.72
0.00
26.76
0.00
32.04
0.00
29.04
0.00
27.23
0.00
25.99
0.00
26.58
0.00
35.94
0.00
20.67
0.00
24.18
0.00
24.13
0.00
23.76
0.00
27.51
0.00
26.92
0.00
29.65
0.00
27.58
0.00
19.15
27.79
IE
Acres:
80%
267
(calc'd)
11
12
13
14
15
New total
Efficiency
irrig. Req.
Table 9-1 irrig
difference
(AF)
Calculated System efficiency
eff.
calc'd v. Tb 9-1
696
72.0%
72.0%
67%
-5%
1139
81.7%
81.7%
65%
-17%
1204
64.9%
64.9%
50%
-15%
737
68.1%
68.1%
70%
2%
755
63.5%
63.5%
65%
1%
832
69.7%
69.7%
70%
0%
689
57.2%
57.2%
59%
2%
542
45.0%
45.0%
46%
1%
590
100.0%
N/A
100%
0
1189
59.4%
59.4%
43%
-16%
707
62.4%
62.4%
58%
-4%
810
69.5%
69.5%
64%
-6%
726
66.4%
66.4%
62%
-4%
1026
84.6%
84.6%
73%
-12%
617
93.7%
93.7%
91%
-3%
993
84.5%
84.5%
74%
-11%
744
69.2%
69.2%
71%
2%
891
70.4%
70.4%
72%
2%
808
70.7%
70.7%
72%
1%
757
98.3%
98.3%
100%
2%
723
72.8%
72.8%
75%
2%
739
66.0%
66.0%
68%
2%
1000
100.0%
N/A
100%
0%
575
100.0%
N/A
100%
0%
673
86.6%
86.6%
89%
2%
671
81.7%
81.7%
84%
2%
661
82.4%
82.4%
84%
2%
765
86.7%
86.7%
89%
2%
749
85.6%
85.6%
88%
2%
825
63.1%
63.1%
65%
2%
767
92.3%
92.3%
94%
2%
533
100.0%
N/A
100%
0%
773
80%
77%
79%
-1%
w/o 100%
1979 to 2006
72%
1985 to 2004
76%
HISTORIC IRRIGATION EFFICIENCY
Comparison of Estimated Irrigation Efficiency
100%
90%
Irrigation Efficiency
80%
Reasonable Efficiency
70%
60%
50%
40%
30%
20%
10%
06
05
20
04
20
03
20
02
20
01
20
00
20
20
99
98
19
97
19
96
19
95
19
94
19
93
19
92
19
91
19
90
19
89
19
88
19
87
19
86
19
85
19
84
19
83
19
82
19
81
19
80
19
79
19
78
19
77
19
76
19
19
19
75
0%
Year
Table 9-1 irrig eff.
1
2
3
4
5
9
10
11
12
13
14
8/29/2008 6:08 PM
Calculated System efficiency
from Table 9-1 and 7-9. Based on PG&E electric records and pump test 1967, 1992, 2004. Daily records 1989-2000 and 2004-2006
same as 1 .
from Table 7-8, Based ETo, Kc = 1.06
from Table 7-11. Historic irrigation used for ET. Month to month annual moisture balance and Crop Uptake. Assumes field capacity = 5 inches. (Rootzone of 2ft and FC of .125 in/in = 3 in usable)
from Table 9-1. Beneficial Use (ET and LF), assumes LF is a constant 10% of Irrigated Water ( 1)
[ 8] - [ 7] = the amount of additional irrigation to achieve the caluclated leaching fraction
[ 4]+[ 9] = Crop ETc plus newly calculated additional irrigation needed for leaching
same as 10 converted to acre-ft.
[ 10]/[ 1] = new efficiency with revised irrigation rate
remove 100%
differnce between 6 and 13
No Project Alternative (Alt 1) El Sur Ranch Monthly Pumping Reduction on BSR Flow Rates (cfs)
days
Year
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
1985-2004
31
Jan
28
Feb
0.01
0.00
0.00
31
Mar
0.00
0.00
30
Apr
0.09
0.02
0.00
0.04
0.03
0.01
31
May
0.08
0.04
0.01
0.01
0.05
0.02
0.09
0.06
0.04
0.03
0.05
0.05
0.03
0.01
0.01
0.06
0.00
0.09
0.04
Monthly Irrigation Pumping Table 6-10 Beneficial Use Study, 2005
30
Jun
0.10
0.12
0.10
0.10
0.03
0.02
0.07
0.09
0.06
0.05
0.03
0.06
0.04
0.01
0.03
0.07
0.07
0.06
0.05
0.07
0.06
31
Jul
0.08
0.07
0.09
0.02
0.03
0.02
0.07
0.04
0.07
0.04
0.08
0.06
0.03
0.05
0.04
0.05
0.06
0.05
0.07
0.05
0.05
31
Aug
0.07
0.07
0.07
0.02
0.03
0.06
0.05
0.03
0.08
0.04
0.05
0.06
0.03
0.04
0.06
0.04
0.04
0.04
0.04
0.06
0.05
= Alt 1 Max
30
Sep
0.01
0.05
0.07
0.04
0.06
0.10
0.04
0.09
0.05
0.07
0.07
0.07
0.04
0.04
0.05
0.07
0.06
0.04
0.05
0.06
0.06
31
Oct
0.00
0.08
0.05
0.07
0.06
0.04
0.03
0.01
0.04
0.05
0.03
0.02
0.03
0.01
0.01
0.03
0.04
0.03
0.03
30
Nov
0.02
0.03
0.02
0.00
0.00
0.01
0.00
31
365
Annual
Average
Dec
(cfs)
0.03
0.03
0.03
0.03
0.02
0.03
0.02
0.03
0.03
0.03
0.02
0.03
0.03
0.02
0.01
0.02
0.02
0.02
0.02
0.02
0.03
0.00
0.03
Annual
(ac-ft)
21
22
20
23
12
22
20
24
21
14
19
21
17
10
15
15
15
17
16
24
18
July to
October
Irrigation
(cfs)
0.04
0.05
0.06
0.04
0.04
0.06
0.05
0.05
0.06
0.04
0.06
0.06
0.04
0.04
0.04
0.04
0.04
0.04
0.05
0.05
0.05
Baseline and Historic Diversions (Alt 2) El Sur Ranch Monthly Pumping Effect on BSR Flow Rate Losses (cfs)
days
Year
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
Average
1985-2004
31
Jan
28
Feb
0.06
0.01
0.00
0.00
0.00
31
Mar
0.00
0.02
0.00
30
Apr
0.96
0.20
0.00
0.47
0.38
0.13
0.10
31
May
0.94
0.41
0.08
0.14
0.56
0.20
1.04
0.62
0.43
0.34
0.50
0.58
0.33
0.14
0.15
0.63
0.02
0.99
0.43
0.41
30
Jun
1.10
1.37
1.11
1.07
0.29
0.25
0.79
1.04
0.72
0.56
0.33
0.66
0.49
0.08
0.36
0.83
0.76
0.70
0.58
0.80
0.72
0.69
Based on Monthly Irrigation Pumping Table 6-10 Beneficial Use Study, 2005
31
Jul
0.90
0.74
1.03
0.26
0.36
0.24
0.74
0.45
0.79
0.40
0.88
0.66
0.36
0.55
0.41
0.50
0.68
0.53
0.80
0.61
0.65
0.59
31
Aug
0.82
0.78
0.80
0.28
0.31
0.68
0.53
0.39
0.85
0.40
0.61
0.72
0.38
0.48
0.69
0.45
0.45
0.41
0.49
0.63
0.63
0.56
30
Sep
0.13
0.51
0.79
0.40
0.65
1.08
0.47
0.97
0.59
0.73
0.81
0.77
0.49
0.44
0.51
0.77
0.64
0.42
0.57
0.71
0.64
0.62
= Baseline and Alt 2
31
Oct
0.04
0.84
0.52
0.78
0.66
0.46
0.34
0.13
0.43
0.50
0.38
0.28
0.35
0.13
0.08
0.34
0.40
0.37
0.38
0.35
30
Nov
0.21
0.30
0.26
0.03
0.02
0.15
0.07
0.05
31
365
Annual
Average
Dec
(cfs)
0.33
0.34
0.31
0.35
0.19
0.34
0.22
0.31
0.36
0.33
0.22
0.29
0.32
0.26
0.16
0.22
0.24
0.23
0.25
0.25
0.38
0.02
0.31
0.01
0.28
Annual
(ac-ft)
236
242
227
252
137
244
224
263
238
160
206
233
191
112
161
171
167
183
182
272
224
205
July to
October
Irrigation
(cfs)
0.46
0.51
0.66
0.45
0.46
0.69
0.60
0.57
0.64
0.41
0.68
0.66
0.40
0.44
0.49
0.46
0.46
0.42
0.56
0.58
0.57
0.53
Alternative Irrigation Efficiency (Alt 3) El Sur Ranch Monthly Pumping Effect on BSR Flow Rate Losses (cfs)
days
Year
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
1985-2004
31
Jan
28
Feb
0.15
0.06
0.01
0.06
0.11
0.19
0.06
0.01
0.12
0.11
0.09
0.05
0.17
0.02
0.24
0.10
0.05
0.09
0.00
0.02
0.24
0.30
0.00
0.03
0.03
0.15
0.09
0.03
0.08
31
Mar
0.04
0.09
0.34
0.08
0.19
0.04
0.06
0.30
0.08
0.33
0.06
0.14
0.12
0.21
0.23
0.28
0.13
30
Apr
0.33
0.37
0.35
0.21
0.30
0.31
0.36
0.41
0.31
0.27
0.19
0.31
0.37
0.09
0.21
0.31
0.20
0.37
0.15
0.41
0.29
31
May
0.45
0.43
0.47
0.41
0.45
0.29
0.46
0.48
0.39
0.39
0.42
0.34
0.48
0.22
0.48
0.39
0.48
0.37
0.38
0.48
0.41
Based on Calculated Net Irrigation Requirement: this Appendix
30
Jun
0.56
0.59
0.59
0.56
0.59
0.59
0.59
0.57
0.49
0.59
0.43
0.59
0.59
0.55
0.55
0.59
0.59
0.58
0.59
0.58
0.57
31
Jul
0.54
0.54
0.54
0.54
0.54
0.54
0.54
0.54
0.54
0.54
0.54
0.54
0.54
0.52
0.54
0.54
0.54
0.54
0.54
0.53
0.54
31
Aug
0.46
0.46
0.46
0.46
0.46
0.46
0.43
0.45
0.46
0.46
0.46
0.46
0.43
0.46
0.46
0.46
0.45
0.46
0.46
0.46
0.45
= Alt 3 Max
30
Sep
0.41
0.32
0.42
0.42
0.32
0.42
0.42
0.42
0.42
0.42
0.42
0.42
0.42
0.40
0.41
0.38
0.42
0.42
0.42
0.42
0.41
31
Oct
0.21
0.36
0.25
0.35
0.20
0.36
0.24
0.30
0.35
0.33
0.36
0.26
0.30
0.30
0.35
0.03
0.35
0.36
0.34
0.05
0.28
30
Nov
0.06
0.28
0.13
0.05
0.16
0.25
0.29
0.29
0.13
0.06
0.28
0.06
0.04
0.14
0.25
0.03
0.08
0.14
0.19
0.14
31
365
Annual
Average
Dec
(cfs)
0.10
0.29
0.09
0.29
0.03
0.28
0.02
0.31
0.23
0.30
0.09
0.30
0.01
0.31
0.01
0.29
0.05
0.27
0.03
0.28
0.03
0.28
0.25
0.01
0.31
0.09
0.22
0.23
0.29
0.21
0.28
0.02
0.27
0.01
0.31
0.01
0.29
0.02
0.29
0.06
0.29
Annual
(ac-ft)
209
211
203
220
214
214
220
213
193
206
202
184
226
161
209
199
196
221
208
213
206
July to
October
Irrigation
(cfs)
0.40
0.42
0.42
0.44
0.38
0.44
0.41
0.43
0.44
0.44
0.45
0.42
0.43
0.42
0.44
0.35
0.44
0.45
0.44
0.36
0.42