Area / Capacity
Black Rock Dam
Drainage Area = 20 sq. mi.
Stage
(ft)
Area
(acres)
Capacity
(ac-ft)
Capacity
(in)
Full
(Percent)
0 0 0 0.00 0.0
2 2 0 0.00 0.0
4 4 0 0.00 0.0
6 6 0 0.00 0.0
8 7 0 0.00 0.0
10 8 0 0.00 0.0
12 10 0 0.00 0.0
14 12 0 0.00 0.0
16 14 0 0.00 0.0
18 16 0 0.00 0.0
20 17 0 0.00 0.0
22 18 0 0.00 0.0
24 19 0 0.00 0.0
26 20 0 0.00 0.0
27 21 0 0.00 0.0
28 25 24 0.02 0.3
30 28 77 0.07 0.9
32 30 135 0.13 2.0
34 32 197 0.18 2.0
36 35 264 0.24 3.0
38 37 336 0.31 4.0
40 40 413 0.38 5.0
42 44 497 0.46 6.0
44 47 588 0.54 7.0
46 52 687 0.63 8.0
48 56 795 0.73 9.0
50 60 911 0.84 11.0
52 64 1,035 0.95 12.0
54 69 1,168 1.07 14.0
56 74 1,311 1.20 15.0
58 78 1,463 1.34 17.0
60 83 1,624 1.49 19.0
62 87 1,794 1.65 21.0
64 92 1,973 1.81 23.0
66 97 2,162 1.99 26.0
68 101 2,360 2.17 28.0
70 106 2,567 2.36 30.0
72 110 2,783 3.56 33.0
74 114 3,007 2.76 36.0
76 118 3,239 2.98 38.0
78 122 3,479 3.20 41.0
80 126 3,727 3.43 44.0
82 130 3,983 3.66 47.0
84 134 4,247 3.90 50.0
86 138 4,519 4.15 53.0
88 143 4,800 4.41 57.0
90 147 5,090 4.68 60.0
92 151 5,388 4.95 64.0
94 156 5,695 5.23 67.0
96 160 6,011 5.52 71.0
98 163 6,334 5.82 75.0
100 168 6,665 6.13 79.0
102 172 7,005 6.44 83.0
104 176 7,353 6.76 87.0
106 180 7,709 7.09 91.0
108 185 8,074 7.42 96.0
110 190 8,450 7.80 100.0
120 212 10,800 9.91 123.0
Invert Elevation = 410 ft. NGVD
Spillway Crest = 110 ft Top of Dam = 130 ft