Area / Capacity
Birch Hill Dam
Drainage Area = 175 sq. mi.
Stage
(ft)
Area
(acres)
Capacity
(ac-ft)
Capacity
(in)
Full
(Percent)
0 0 0 0.00 0.0
1 40 100 0.00 0.2
2 90 200 0.00 0.4
3 140 450 0.01 0.9
4 190 750 0.04 2.0
5 250 1,000 0.07 2.0
6 310 1,450 0.12 3.0
7 375 1,750 0.15 4.0
8 450 2,200 0.20 4.0
9 525 2,750 0.25 6.0
10 600 3,200 0.30 6.0
11 675 3,800 0.37 8.0
12 740 4,500 0.44 9.0
13 820 5,200 0.52 10.0
14 890 6,000 0.60 12.0
15 975 6,900 0.70 14.0
16 1060 7,850 0.80 16.0
17 1140 8,800 0.90 18.0
18 1230 9,900 1.02 20.0
19 1320 11,100 1.15 22.0
20 1420 12,200 1.27 24.0
21 1500 13,700 1.43 27.0
22 1600 15,200 1.59 30.0
23 1700 16,800 1.76 34.0
24 1800 18,500 1.94 37.0
25 1910 20,400 2.15 41.0
27 2120 24,100 2.54 48.0
29 2325 28,300 2.99 57.0
31 2550 32,800 3.47 66.0
32 2660 35,600 3.77 71.0
34 2890 41,000 4.35 82.0
35 3000 44,000 4.67 88.0
37 3200 49,900 5.34 100.0
39 3460 57,000 6.10 114.0
40 3580 61,000 6.53 122.0
42 3825 68,500 7.33 137.0
44 4060 76,500 8.19 153.0
Invert Elevation = 815 ft. NGVD
Spillway Crest = 37 ft Top of Dam = 49 ft