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

Hydrograph 100-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 12.93 12.10 43,366 35, 36 39 NRCS Runoff PR-2A-U Open Space C 1.297 12.20 5,384 ---- 40 NRCS Runoff PR-2A-U Woods C 1.222 12.20 5,018 ---- 41 NRCS Runoff PR-2A-U Impervious 7.775 12.10 26,285 ---- 42 Junction PR-2A-U 9.764 12.10 36,687 39, 40, 41 45 Junction PR-2A 22.69 12.10 80,053 37, 42 46 Pond Route PR-2A Routing 9.295 12.23 76,666 45 539.63 25,429 48 NRCS Runoff PR-2B-D Open Space D 0.325 12.10 987 ---- 49 NRCS Runoff PR-2B-D Impervious 4.230 12.10 14,302 ---- 50 Junction PR-2B-D 4.555 12.10 15,289 48, 49 52 NRCS Runoff PR-2B-U Open Space C 0.098 12.10 280 ---- 53 NRCS Runoff PR-2B-U Impervious 0.343 12.10 1,160 ---- 54 Junction PR-2B-U 0.441 12.10 1,440 52, 53 56 Junction PR-2B 4.996 12.10 16,729 50, 54 57 Pond Route PR-2B Routing 0.641 12.62 16,716 56 555.69 7,083 59 NRCS Runoff PR-2C-D Open Space D 6.049 12.10 17,882 ---- 60 NRCS Runoff PR-2C-D Impervious 3.316 12.10 11,210 ---- 61

59 NRCS Runoff PR-2C-D Open Space D 6.049 12.10 17,882 ---- 60 NRCS Runoff PR-2C-D Impervious 3.316 12.10 11,210 ---- 61 Junction PR-2C-D 9.365 12.10 29,092 59, 60 63 NRCS Runoff PR-2C-U Open Space C 4.898 12.20 20,341 ---- 64 NRCS Runoff PR-2C-U Woods C 5.226 12.20 21,464 ---- 65 NRCS Runoff PR-2C-U Gravel C 0.890 12.10 2,787 ---- 66 NRCS Runoff PR-2C-U Impervious 5.488 12.10 18,554 ---- 67 Junction PR-2C-U 14.37 12.10 63,147 63, 64, 65, 66 70 Junction POA-2 31.63 12.10 185,620 46, 57, 61, 67