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

Hydrograph 2-yr Summary File: Eagle Rock Proposed (Current).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 2.928 12.10 9,417 35, 36 39 NRCS Runoff PR-2A-U Open Space C 0.173 12.25 783 ---- 40 NRCS Runoff PR-2A-U Woods C 0.135 12.25 635 ---- 41 NRCS Runoff PR-2A-U Impervious 2.299 12.10 7,467 ---- 42 Junction PR-2A-U 2.492 12.10 8,885 39, 40, 41 45 Junction PR-2A 5.420 12.10 18,303 37, 42 46 Pond Route PR-2A Routing 0.856 12.62 14,915 45 538.07 9,171 48 NRCS Runoff PR-2B-D Open Space D 0.061 12.10 175 ---- 49 NRCS Runoff PR-2B-D Impervious 1.251 12.10 4,063 ---- 50 Junction PR-2B-D 1.312 12.10 4,238 48, 49 52 NRCS Runoff PR-2B-U Open Space C 0.015 12.10 41.3 ---- 53 NRCS Runoff PR-2B-U Impervious 0.101 12.10 329 ---- 54 Junction PR-2B-U 0.117 12.10 371 52, 53 56 Junction PR-2B 1.429 12.10 4,608 50, 54 57 Pond Route PR-2B Routing 0.184 12.62 4,595 56 553.73 1,923 59 NRCS Runoff PR-2C-D Open Space D 1.169 12.10 3,167 ---- 60 NRCS Runoff PR-2C-D Impervious 0.980 12.10 3,184 ---- 61

59 NRCS Runoff PR-2C-D Open Space D 1.169 12.10 3,167 ---- 60 NRCS Runoff PR-2C-D Impervious 0.980 12.10 3,184 ---- 61 Junction PR-2C-D 2.150 12.10 6,352 59, 60 63 NRCS Runoff PR-2C-U Open Space C 0.690 12.23 3,030 ---- 64 NRCS Runoff PR-2C-U Woods C 0.609 12.23 2,783 ---- 65 NRCS Runoff PR-2C-U Gravel C 0.223 12.10 632 ---- 66 NRCS Runoff PR-2C-U Impervious 1.623 12.10 5,271 ---- 67 Junction PR-2C-U 2.706 12.10 11,716 63, 64, 65, 66 70 Junction POA-2 5.668 12.10 37,577 46, 57, 61, 67