Analysis of Colorado-Big Thompson Project Operation With Respect to East Slope Diversions and Non-Charge Deliveries

• Description: For the River Colorado Water Conservancy District
• State: CO
• Basin: South Platte
• Basin: Colorado Mainstem
• Water Division: 1
• Date: 10/1/2000
• Author: Helton & Williamsen, P.C.
• Title: Analysis of Colorado-Big Thompson Project Operation with Respect to East Slope Diversions and Non-charge Deliveries
• Water Supply Pro - Doc Type: Report/Study

TABLE 3 -B
END -OF -MONTH CONTENTS -- HORSETOOTH RESERVOIR
Units of 1000 AC -FT
Water
Year Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep Oct
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13)
HORSETOOTH RESERVOIR
1951
ib.S
JL.1
JI.L
"Q.r
vr.a
-ro.i
.,-
1952
57.7
59.0
64.8
71.5
72.1
75.1
81.3
81.6
79.1
69.9
59.9
59.5
1953
65.9
85.0
104.5
119.0
126.3
128.1
125.7
114.6
84.1
63.4
47.3
55.6
1954
72.3
91.5
104.6
118.8
124.1
122.2
90.5
62.5
36.4
16.7
15.8
31.1
1955
35.1
50.3
66.7
83.9
93.0
108.9
88.0
85.3
64.4
38.8
21.0
19.5
1956
30.7
39.7
48.1
61.4
79.3
95.4
99.4
97.3
74.0
49.2
30.8
33.3
1957
45.8
56.6
69.6
83.6
101.3
118.9
127.2
135.6
129.1
104.2
84.8
77.4
1958
85.4
94.4
107.0
113.3
128.7
141.5
146.6
139.0
104.0
56.7
30.5
29.5
1959
45.4
65.1
86.0
93.1
105.4
125.8
138.5
131.7
105.1
62.6
51.5
56.3
1960
67.0
78.0
92.9
106.3
117.7
127.4
140.3
139.4
121.9
75.1
58.7
64.2
1961
74.2
86.6
97.4
107.0
120.4
127.8
142.2
149.3
137.6
114.1
101.4
104.2
1962
109.7
119.2
130.0
137.3
143.4
145.7
142.2
149.0
115.5
81.9
58.1
50.8
1963
61.7
78.2
91.4
100.0
119.8
122.9
100.2
100.3
84.0
53.3
35.4
31.3
1964
41.8
58.1
73.5
89.9
107.5
118.2
108.1
113.1
85.6
52.8
44.9
43.5
1965
50.9
64.3
77.6
88.7
102.9
110.7
107.7
116.5
113.2
93.8
80.4
69.1
1966
70.4
76.2
87.2
103.8
121.2
129.9
131.4
123.3
85.3
45.5
42.5
40.8
1967
51.9
66.3
77.8
92.1
111.8
124.9
134.3
137.3
137.0
91.8
67.5
63.2
1968
67.1
80.4
93.5
106.1
120.6
132.6
137.0
134.2
117.0
94.2
77.7
82.7
1969
82.3
88.4
98.4
106.6
118.7
125.0
132.6
147.7
119.3
82.8
73.9
75.8
1970
77.2
84.7
90.3
101.6
116.7
131.8
146.7
149.8
136.3
103.1
92.6
88.4
1971
94.8
100.5
107.4
114.6
124.8
136.7
147.8
146.5
112.0
81.3
72.1
65.5
1972
71.6
82.7
98.8
114.8
131.2
142.3
136.7
137.9
115.7
81.8
77.2
59.7
1973
67.2
81.7
92.8
103.5
113.6
129.5
140.2
140.2
140.2
109.5
96.4
95.3
1974
39.1
105.0
114.9
120.8
129.4
133.8
144.6
145.9
114.1
72.9
68.0
51.9
1975
58.6
73.0
89.8
97.9
111.4
123.2
136.5
136.3
122.0
86.6
78.0
68.7
1976
78.4
87.9
99.3
119.0
129.1
134.7
138.3
124.7
87.7
49.7
37.3
23.6
1977
41.4
65.3
79.0
87.2
98.8
107.2
93.4
71.7
50.5
24.8
10.3
8.3
1978
8.3
19.5
37.0
46.2
58.3
67.4
85.4
95.5
76.0
56.0
62.0
60.0
1979
63.1
70.9
82.8
92.5
113.1
122.0
140.1
148.4
124.9
108.1
103.5
102.7
1980
104.3
110.3
115.9
122.3
135.1
143.3
147.6
145.2
118.5
91.8
831
73.1
1981
78.4
83.1
98.3
115.1
129.3
136.5
136.3
126.6
97.0
71.3
61.4
52.0
1982
55.0
69.7
87.4
100.2
113.6
121.7
127.6
128.0
122.2
106.9
102.1
84.0
1983
87.9
94.3
106.2
117.6
125.0
126.0
144.5
144.8
139.1
124.7
109.6
108.7
1984
111.7
120.8
123.8
130.1
140.8
143.8
143.1
142.8
100.3
80.0
73.4
71.1
1985
77.2
85.0
99.3
112.1
133.8
126.0
128.0
105.1
98.2
76.7
80.7
86.5
1986
90.1
99.0
110.3
120.9
134.2
137.5
115.3
139.5
118.2
92.9
89.7
95.3
1987
95.8
105.5
112.5
128.5
141.4
140.9
133.5
134.1
110.8
101.6
95.6
92.3
1988
95.3
104.8
113.5
128.3
134.7
137.0
134.4
136.0
111.1
86.6
70.2
67.4
1989
69.0
82.8
105.9
125.0
133.3
131.2
118.3
116.8
79.7
65.5
63.8
48.5
1990
55.1
72.7
89.4
102.6
114.3
116.0
117.0
114.6
103.3
89.4
84.7
86.9
1991
90.2
104.0
116.0
125.1
129.3
139.2
138.7
138.9
114.6
101.4
94.5
89.7
1992
95.3
102.6
112.9
123.1
136.5
138.7
130.5
141.2
124.0
111.9
107.6
107.6
1993
109.5
117.3
121.4
125.7
126.4
129.0
137.4
138.3
115.5
107.5
105.2
101.5
1994
111.4
116.2
122.9
133.9
139.3
138.3
129.2
114.1
89.5
75.9
72.5
69.2
1995
72.4
98.8
127.8
136.8
140.2
139.5
154.1
155.4
137.4
124.1
111.2
108.2
1996
117.8
125.1
136.5
147.8
152.3
145.2
134.5
153.8
141.6
130.8
122.3
121.2
1997
125.7
130.3
134.6
138.6
139.5
144.2
131.8
152.6
147.0
141.9
124.3
128.8
1998
138.2
142.4
150.1
150.4
150.2
148.5
117.0
106.9
86.2
91.8
81.9
74.59
Average
74.4
86.7
98.9
109.9
121.1
125.2
125.7
125.5
105.6
82.1
72.1
69.4
Maximum
138.2
142.4
150.1
150.4
152.3
148.5
154.1
155.4
147.0
141.9
124.3
128.8
Minimum
8.3
19.5
37.0
46.2
58.3
15.5
32.1
37.2
36.4
16.7
10.3
8.3
Avg 55 -82 I 62.7 76.3 89.0 100.3 114.1 124.5 128.5 128.4 107.5 76.5 64.4 59.8
Avg 83 -98 96.4 106.3 117.7 127.9 135.7 136.3 131.7 133.4 113.5 100.2 93.0 91.1
Notes: Data for October 1957 through September 1996 were obtained from the USBR Annual Operating Plans.
The remaining data were obtained from USGS Records.
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Helton 8 Williamson, P.C. C706 - EOM,Carter - Horsetoolh Res.xls, Horsetoolh, 9/25/2000