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

Hydrograph 10-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 5.246 12.10 17,014 35, 36 39 NRCS Runoff PR-2A-U Open Space C 0.393 12.23 1,725 ---- 40 NRCS Runoff PR-2A-U Woods C 0.339 12.23 1,500 ---- 41 NRCS Runoff PR-2A-U Impervious 3.594 12.10 11,901 ---- 42 Junction PR-2A-U 4.094 12.10 15,126 39, 40, 41 45 Junction PR-2A 9.340 12.10 32,140 37, 42 46 Pond Route PR-2A Routing 2.457 12.37 28,753 45 538.57 14,024 48 NRCS Runoff PR-2B-D Open Space D 0.122 12.10 351 ---- 49 NRCS Runoff PR-2B-D Impervious 1.956 12.10 6,475 ---- 50 Junction PR-2B-D 2.078 12.10 6,827 48, 49 52 NRCS Runoff PR-2B-U Open Space C 0.033 12.10 90.9 ---- 53 NRCS Runoff PR-2B-U Impervious 0.159 12.10 525 ---- 54 Junction PR-2B-U 0.192 12.10 616 52, 53 56 Junction PR-2B 2.270 12.10 7,443 50, 54 57 Pond Route PR-2B Routing 0.246 12.82 7,429 56 554.20 3,173 59 NRCS Runoff PR-2C-D Open Space D 2.298 12.10 6,369 ---- 60 NRCS Runoff PR-2C-D Impervious 1.533 12.10 5,075 ---- 61

59 NRCS Runoff PR-2C-D Open Space D 2.298 12.10 6,369 ---- 60 NRCS Runoff PR-2C-D Impervious 1.533 12.10 5,075 ---- 61 Junction PR-2C-D 3.831 12.10 11,445 59, 60 63 NRCS Runoff PR-2C-U Open Space C 1.567 12.22 6,675 ---- 64 NRCS Runoff PR-2C-U Woods C 1.531 12.22 6,572 ---- 65 NRCS Runoff PR-2C-U Gravel C 0.383 12.10 1,126 ---- 66 NRCS Runoff PR-2C-U Impervious 2.537 12.10 8,400 ---- 67 Junction PR-2C-U 5.133 12.10 22,774 63, 64, 65, 66 70 Junction POA-2 10.31 12.10 70,401 46, 57, 61, 67