12 2026 02 12 Crestmont CC Stormwater Management Report

Hydrograph Report File: Eagle Rock Proposed (Current).hys Hydrology Studio v 3.0.0.39 10-22-2025 PR-1A Routing Hyd. No. 11 Hydrograph Type = Pond Route Peak Flow = 3.069 cfs Storm Frequency = 25-yr Time to Peak = 12.27 hrs Time Interval = 1 min Hydrograph Volume = 26,002 cuft Inflow Hydrograph = 10 - PR-1A Total Max. Elevation = 536.03 ft Pond Name = SSBB-1 Max. Storage = 10,002 cuft Pond Routing by Storage Indication Method Center of mass detention time = 1.46 hrs Hydrograph Discharge Table Time Outflow Time Outflow Time Outflow Time Outflow Time Outflow (hrs) (cfs) (hrs) (cfs) (hrs) (cfs) (hrs) (cfs) (hrs) (cfs) 9.63 0.031 10.05 0.106 10.47 0.219 10.88 0.343 11.30 0.547 9.65 0.034 10.07 0.111 10.48 0.223 10.90 0.350 11.32 0.557 9.67 0.038 10.08 0.116 10.50 0.227 10.92 0.357 11.33 0.566 9.68 0.041 10.10 0.121 10.52 0.230 10.93 0.364 11.35 0.575 9.70 0.044 10.12 0.126 10.53 0.234 10.95 0.371 11.37 0.584 9.72 0.047 10.13 0.131 10.55 0.239 10.97 0.378 11.38 0.593 9.73

0.371 11.37 0.584 9.72 0.047 10.13 0.131 10.55 0.239 10.97 0.378 11.38 0.593 9.73 0.050 10.15 0.136 10.57 0.243 10.98 0.385 11.40 0.602 9.75 0.053 10.17 0.141 10.58 0.247 11.00 0.392 11.42 0.612 9.77 0.056 10.18 0.146 10.60 0.251 11.02 0.399 11.43 0.621 9.78 0.059 10.20 0.150 10.62 0.256 11.03 0.406 11.45 0.631 9.80 0.062 10.22 0.155 10.63 0.260 11.05 0.414 11.47 0.641 9.82 0.065 10.23 0.159 10.65 0.265 11.07 0.422 11.48 0.651 9.83 0.068 10.25 0.164 10.67 0.269 11.08 0.430 11.50 0.661 9.85 0.071 10.27 0.169 10.68 0.274 11.10 0.438 11.52 0.672 9.87 0.074 10.28 0.173 10.70 0.279 11.12 0.446 11.53 0.684 9.88 0.077 10.30 0.177 10.72 0.283 11.13 0.454 11.55 0.699 9.90 0.080 10.32 0.182 10.73 0.288 11.15 0.463 11.57 0.715 9.92 0.083 10.33 0.186 10.75 0.293 11.17 0.472 11.58 0.731 9.93 0.086 10.35 0.190 10.77 0.298 11.18 0.481 11.60 0.748 9.95 0.089 10.37 0.195 10.78 0.303 11.20 0.489 11.62 0.764 9.97 0.092 10.38 0.199 10.80 0.310 11.22 0.498 11.63 0.779 9.98 0.095 10.40 0.203 10.82 0.316 11.23 0.508

0.199 10.80 0.310 11.22 0.498 11.63 0.779 9.98 0.095 10.40 0.203 10.82 0.316 11.23 0.508 11.65 0.791 10.00 0.098 10.42 0.207 10.83 0.323 11.25 0.517 11.67 0.803 10.02 0.101 10.43 0.211 10.85 0.330 11.27 0.527 11.68 0.815 10.03 0.103 10.45 0.215 10.87 0.336 11.28 0.537 11.70 0.827 Printed values > 1% of Qpeak. nth-point print interval = 1