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

Hydrograph 100-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 10.02 12.10 33,216 35, 36 39 NRCS Runoff PR-2A-U Open Space C 0.881 12.23 3,907 ---- 40 NRCS Runoff PR-2A-U Woods C 0.814 12.23 3,583 ---- 41 NRCS Runoff PR-2A-U Impervious 6.190 12.10 20,826 ---- 42 Junction PR-2A-U 7.407 12.10 28,316 39, 40, 41 45 Junction PR-2A 17.42 12.10 61,532 37, 42 46 Pond Route PR-2A Routing 6.883 12.25 58,144 45 539.24 21,029 48 NRCS Runoff PR-2B-D Open Space D 0.248 12.10 740 ---- 49 NRCS Runoff PR-2B-D Impervious 3.368 12.10 11,332 ---- 50 Junction PR-2B-D 3.616 12.10 12,072 48, 49 52 NRCS Runoff PR-2B-U Open Space C 0.073 12.10 206 ---- 53 NRCS Runoff PR-2B-U Impervious 0.273 12.10 919 ---- 54 Junction PR-2B-U 0.346 12.10 1,125 52, 53 56 Junction PR-2B 3.962 12.10 13,197 50, 54 57 Pond Route PR-2B Routing 0.476 12.67 13,183 56 555.14 5,649 59 NRCS Runoff PR-2C-D Open Space D 4.630 12.10 13,414 ---- 60 NRCS Runoff PR-2C-D Impervious 2.640 12.10 8,882 ---- 61

59 NRCS Runoff PR-2C-D Open Space D 4.630 12.10 13,414 ---- 60 NRCS Runoff PR-2C-D Impervious 2.640 12.10 8,882 ---- 61 Junction PR-2C-D 7.270 12.10 22,296 59, 60 63 NRCS Runoff PR-2C-U Open Space C 3.514 12.22 15,116 ---- 64 NRCS Runoff PR-2C-U Woods C 3.677 12.22 15,698 ---- 65 NRCS Runoff PR-2C-U Gravel C 0.699 12.10 2,152 ---- 66 NRCS Runoff PR-2C-U Impervious 4.369 12.10 14,701 ---- 67 Junction PR-2C-U 10.44 12.10 47,667 63, 64, 65, 66 70 Junction POA-2 23.96 12.10 141,291 46, 57, 61, 67