2026 02 12 Crestmont CC and Eagle Rock Ave Stormwater Management Report

Hydrograph 25-yr Summary File: Eagle Rock Proposed (Future).hys Hydrology Studio v 3.0.0.39 10-21-2025 Hyd. Hydrograph Hydrograph Peak Time to Hydrograph Inflow Maximum Maximum Flow Peak Volume Hyd(s) Elevation Storage No. Type Name (cfs) (hrs) (cuft) (ft) (cuft) 37 Junction PR-2A-D 8.643 12.10 28,488 35, 36 39 NRCS Runoff PR-2A-U Open Space C 0.808 12.20 3,295 ---- 40 NRCS Runoff PR-2A-U Woods C 0.737 12.20 2,990 ---- 41 NRCS Runoff PR-2A-U Impervious 5.444 12.10 18,259 ---- 42 Junction PR-2A-U 6.642 12.10 24,543 39, 40, 41 45 Junction PR-2A 15.28 12.10 53,032 37, 42 46 Pond Route PR-2A Routing 6.082 12.25 49,644 45 539.07 19,070 48 NRCS Runoff PR-2B-D Open Space D 0.212 12.10 626 ---- 49 NRCS Runoff PR-2B-D Impervious 2.962 12.10 9,935 ---- 50 Junction PR-2B-D 3.174 12.10 10,561 48, 49 52 NRCS Runoff PR-2B-U Open Space C 0.062 12.10 172 ---- 53 NRCS Runoff PR-2B-U Impervious 0.240 12.10 806 ---- 54 Junction PR-2B-U 0.302 12.10 977 52, 53 56 Junction PR-2B 3.476 12.10 11,538 50, 54 57 Pond Route PR-2B Routing 0.354 12.85 11,525 56 554.92 5,060 59 NRCS Runoff PR-2C-D Open Space D 3.960 12.10 11,343 ---- 60 NRCS Runoff PR-2C-D Impervious 2.322 12.10 7,787 ---- 61

59 NRCS Runoff PR-2C-D Open Space D 3.960 12.10 11,343 ---- 60 NRCS Runoff PR-2C-D Impervious 2.322 12.10 7,787 ---- 61 Junction PR-2C-D 6.281 12.10 19,130 59, 60 63 NRCS Runoff PR-2C-U Open Space C 3.052 12.20 12,446 ---- 64 NRCS Runoff PR-2C-U Woods C 3.154 12.20 12,791 ---- 65 NRCS Runoff PR-2C-U Gravel C 0.609 12.10 1,855 ---- 66 NRCS Runoff PR-2C-U Impervious 3.843 12.10 12,889 ---- 67 Junction PR-2C-U 9.262 12.10 39,981 63, 64, 65, 66 70 Junction POA-2 20.85 12.10 120,279 46, 57, 61, 67