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

Hydrograph 2-yr Summary File: Eagle Rock Proposed (Future).hys Hydrology Studio v 3.0.0.39 10-22-2025 Hyd. Hydrograph Hydrograph Peak Time to Hydrograph Inflow Maximum Maximum Flow Peak Volume Hyd(s) Elevation Storage No. Type Name (cfs) (min) (cuft) (ft) (cuft) 37 Junction PR-2A-D 1.509 65 1,997 35, 36 39 NRCS Runoff PR-2A-U Open Space C 0.022 79 48.1 ---- 40 NRCS Runoff PR-2A-U Woods C 0.008 87 21.5 ---- 41 NRCS Runoff PR-2A-U Impervious 1.963 65 2,394 ---- 42 Junction PR-2A-U 1.965 65 2,464 39, 40, 41 45 Junction PR-2A 3.474 65 4,460 37, 42 46 Pond Route PR-2A Routing 0.000 58 0.000 45 537.39 3,332 48 NRCS Runoff PR-2B-D Open Space D 0.017 67 18.8 ---- 49 NRCS Runoff PR-2B-D Impervious 1.068 65 1,303 ---- 50 Junction PR-2B-D 1.083 65 1,322 48, 49 52 NRCS Runoff PR-2B-U Open Space C 0.002 66 2.50 ---- 53 NRCS Runoff PR-2B-U Impervious 0.087 65 106 ---- 54 Junction PR-2B-U 0.088 65 108 52, 53 56 Junction PR-2B 1.171 65 1,430 50, 54 57 Pond Route PR-2B Routing 0.124 93 1,416 56 553.40 1,059 59 NRCS Runoff PR-2C-D Open Space D 0.348 65 341 ---- 60 NRCS Runoff PR-2C-D Impervious 0.837 65 1,021 ---- 61

59 NRCS Runoff PR-2C-D Open Space D 0.348 65 341 ---- 60 NRCS Runoff PR-2C-D Impervious 0.837 65 1,021 ---- 61 Junction PR-2C-D 1.186 65 1,362 59, 60 63 NRCS Runoff PR-2C-U Open Space C 0.081 79 182 ---- 64 NRCS Runoff PR-2C-U Woods C 0.034 87 92.0 ---- 65 NRCS Runoff PR-2C-U Gravel C 0.125 65 122 ---- 66 NRCS Runoff PR-2C-U Impervious 1.386 65 1,690 ---- 67 Junction PR-2C-U 1.517 65 2,086 63, 64, 65, 66 70 Junction POA-2 2.799 65 4,865 46, 57, 61, 67