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

Hydrograph 10-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 6.465 12.10 21,092 35, 36 39 NRCS Runoff PR-2A-U Open Space C 0.564 12.20 2,286 ---- 40 NRCS Runoff PR-2A-U Woods C 0.500 12.20 2,027 ---- 41 NRCS Runoff PR-2A-U Impervious 4.260 12.10 14,189 ---- 42 Junction PR-2A-U 5.071 12.10 18,502 39, 40, 41 45 Junction PR-2A 11.54 12.10 39,594 37, 42 46 Pond Route PR-2A Routing 4.038 12.27 36,206 45 538.75 15,826 48 NRCS Runoff PR-2B-D Open Space D 0.154 12.10 448 ---- 49 NRCS Runoff PR-2B-D Impervious 2.318 12.10 7,720 ---- 50 Junction PR-2B-D 2.472 12.10 8,169 48, 49 52 NRCS Runoff PR-2B-U Open Space C 0.043 12.10 119 ---- 53 NRCS Runoff PR-2B-U Impervious 0.188 12.10 626 ---- 54 Junction PR-2B-U 0.231 12.10 745 52, 53 56 Junction PR-2B 2.704 12.10 8,914 50, 54 57 Pond Route PR-2B Routing 0.273 12.87 8,901 56 554.46 3,854 59 NRCS Runoff PR-2C-D Open Space D 2.895 12.10 8,126 ---- 60 NRCS Runoff PR-2C-D Impervious 1.817 12.10 6,051 ---- 61

59 NRCS Runoff PR-2C-D Open Space D 2.895 12.10 8,126 ---- 60 NRCS Runoff PR-2C-D Impervious 1.817 12.10 6,051 ---- 61 Junction PR-2C-D 4.712 12.10 14,177 59, 60 63 NRCS Runoff PR-2C-U Open Space C 2.131 12.20 8,635 ---- 64 NRCS Runoff PR-2C-U Woods C 2.138 12.20 8,669 ---- 65 NRCS Runoff PR-2C-U Gravel C 0.465 12.10 1,387 ---- 66 NRCS Runoff PR-2C-U Impervious 3.007 12.10 10,016 ---- 67 Junction PR-2C-U 6.724 12.10 28,708 63, 64, 65, 66 70 Junction POA-2 14.02 12.10 87,991 46, 57, 61, 67