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

Hydrograph 25-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 6.898 12.10 22,551 35, 36 39 NRCS Runoff PR-2A-U Open Space C 0.559 12.23 2,454 ---- 40 NRCS Runoff PR-2A-U Woods C 0.498 12.23 2,188 ---- 41 NRCS Runoff PR-2A-U Impervious 4.496 12.10 14,998 ---- 42 Junction PR-2A-U 5.236 12.10 19,640 39, 40, 41 45 Junction PR-2A 12.13 12.10 42,191 37, 42 46 Pond Route PR-2A Routing 4.531 12.25 38,803 45 538.80 16,329 48 NRCS Runoff PR-2B-D Open Space D 0.166 12.10 483 ---- 49 NRCS Runoff PR-2B-D Impervious 2.446 12.10 8,161 ---- 50 Junction PR-2B-D 2.612 12.10 8,644 48, 49 52 NRCS Runoff PR-2B-U Open Space C 0.047 12.10 129 ---- 53 NRCS Runoff PR-2B-U Impervious 0.198 12.10 662 ---- 54 Junction PR-2B-U 0.245 12.10 791 52, 53 56 Junction PR-2B 2.857 12.10 9,435 50, 54 57 Pond Route PR-2B Routing 0.283 12.92 9,422 56 554.56 4,100 59 NRCS Runoff PR-2C-D Open Space D 3.107 12.10 8,757 ---- 60 NRCS Runoff PR-2C-D Impervious 1.917 12.10 6,396 ---- 61

59 NRCS Runoff PR-2C-D Open Space D 3.107 12.10 8,757 ---- 60 NRCS Runoff PR-2C-D Impervious 1.917 12.10 6,396 ---- 61 Junction PR-2C-D 5.024 12.10 15,154 59, 60 63 NRCS Runoff PR-2C-U Open Space C 2.230 12.22 9,495 ---- 64 NRCS Runoff PR-2C-U Woods C 2.251 12.22 9,585 ---- 65 NRCS Runoff PR-2C-U Gravel C 0.494 12.10 1,480 ---- 66 NRCS Runoff PR-2C-U Impervious 3.174 12.10 10,587 ---- 67 Junction PR-2C-U 6.937 12.10 31,147 63, 64, 65, 66 70 Junction POA-2 15.04 12.10 94,525 46, 57, 61, 67