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 10-21-2025 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 3.665 12.10 11,808 35, 36 39 NRCS Runoff PR-2A-U Open Space C 0.264 12.20 1,082 ---- 40 NRCS Runoff PR-2A-U Woods C 0.215 12.22 904 ---- 41 NRCS Runoff PR-2A-U Impervious 2.718 12.10 8,898 ---- 42 Junction PR-2A-U 3.066 12.10 10,883 39, 40, 41 45 Junction PR-2A 6.730 12.10 22,691 37, 42 46 Pond Route PR-2A Routing 1.017 12.63 19,304 45 538.28 11,216 48 NRCS Runoff PR-2B-D Open Space D 0.081 12.10 230 ---- 49 NRCS Runoff PR-2B-D Impervious 1.479 12.10 4,841 ---- 50 Junction PR-2B-D 1.559 12.10 5,071 48, 49 52 NRCS Runoff PR-2B-U Open Space C 0.021 12.10 56.3 ---- 53 NRCS Runoff PR-2B-U Impervious 0.120 12.10 393 ---- 54 Junction PR-2B-U 0.141 12.10 449 52, 53 56 Junction PR-2B 1.700 12.10 5,520 50, 54 57 Pond Route PR-2B Routing 0.205 12.70 5,506 56 553.88 2,314 59 NRCS Runoff PR-2C-D Open Space D 1.526 12.10 4,161 ---- 60 NRCS Runoff PR-2C-D Impervious 1.159 12.10 3,795 ---- 61

59 NRCS Runoff PR-2C-D Open Space D 1.526 12.10 4,161 ---- 60 NRCS Runoff PR-2C-D Impervious 1.159 12.10 3,795 ---- 61 Junction PR-2C-D 2.685 12.10 7,955 59, 60 63 NRCS Runoff PR-2C-U Open Space C 0.996 12.20 4,086 ---- 64 NRCS Runoff PR-2C-U Woods C 0.921 12.22 3,867 ---- 65 NRCS Runoff PR-2C-U Gravel C 0.275 12.10 789 ---- 66 NRCS Runoff PR-2C-U Impervious 1.918 12.10 6,281 ---- 67 Junction PR-2C-U 3.584 12.10 15,022 63, 64, 65, 66 70 Junction POA-2 7.270 12.10 47,788 46, 57, 61, 67