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