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

Hydrograph Report File: Eagle Rock Proposed (Current).hys Hydrology Studio v 3.0.0.39 10-22-2025 PR-2A Routing Hyd. No. 46 Hydrograph Type = Pond Route Peak Flow = 4.531 cfs Storm Frequency = 25-yr Time to Peak = 12.25 hrs Time Interval = 1 min Hydrograph Volume = 38,803 cuft Inflow Hydrograph = 45 - PR-2A Max. Elevation = 538.80 ft Pond Name = SSBB-2 Max. Storage = 16,329 cuft Pond Routing by Storage Indication Method Center of mass detention time = 2.04 hrs Hydrograph Discharge Table Time Outflow Time Outflow Time Outflow Time Outflow Time Outflow (hrs) (cfs) (hrs) (cfs) (hrs) (cfs) (hrs) (cfs) (hrs) (cfs) 9.37 0.046 9.78 0.098 10.20 0.181 10.62 0.276 11.03 0.421 9.38 0.048 9.80 0.102 10.22 0.184 10.63 0.281 11.05 0.427 9.40 0.050 9.82 0.105 10.23 0.187 10.65 0.286 11.07 0.434 9.42 0.051 9.83 0.108 10.25 0.191 10.67 0.291 11.08 0.440 9.43 0.053 9.85 0.111 10.27 0.194 10.68 0.296 11.10 0.446 9.45 0.055 9.87 0.115 10.28 0.197 10.70 0.301 11.12 0.453 9.47

0.296 11.10 0.446 9.45 0.055 9.87 0.115 10.28 0.197 10.70 0.301 11.12 0.453 9.47 0.056 9.88 0.118 10.30 0.201 10.72 0.307 11.13 0.459 9.48 0.058 9.90 0.121 10.32 0.204 10.73 0.312 11.15 0.466 9.50 0.060 9.92 0.125 10.33 0.207 10.75 0.317 11.17 0.474 9.52 0.062 9.93 0.128 10.35 0.211 10.77 0.323 11.18 0.481 9.53 0.063 9.95 0.131 10.37 0.214 10.78 0.329 11.20 0.488 9.55 0.065 9.97 0.135 10.38 0.217 10.80 0.334 11.22 0.496 9.57 0.067 9.98 0.138 10.40 0.221 10.82 0.340 11.23 0.503 9.58 0.069 10.00 0.141 10.42 0.224 10.83 0.346 11.25 0.511 9.60 0.070 10.02 0.145 10.43 0.227 10.85 0.352 11.27 0.519 9.62 0.072 10.03 0.148 10.45 0.231 10.87 0.358 11.28 0.527 9.63 0.074 10.05 0.151 10.47 0.236 10.88 0.364 11.30 0.535 9.65 0.076 10.07 0.154 10.48 0.240 10.90 0.370 11.32 0.544 9.67 0.078 10.08 0.158 10.50 0.244 10.92 0.376 11.33 0.552 9.68 0.079 10.10 0.161 10.52 0.248 10.93 0.382 11.35 0.561 9.70 0.082 10.12 0.164 10.53 0.253 10.95 0.389 11.37 0.570 9.72 0.085 10.13 0.168 10.55 0.257 10.97 0.395

0.164 10.53 0.253 10.95 0.389 11.37 0.570 9.72 0.085 10.13 0.168 10.55 0.257 10.97 0.395 11.38 0.579 9.73 0.088 10.15 0.171 10.57 0.262 10.98 0.402 11.40 0.586 9.75 0.092 10.17 0.174 10.58 0.267 11.00 0.408 11.42 0.593 9.77 0.095 10.18 0.178 10.60 0.271 11.02 0.415 11.43 0.599 Printed values > 1% of Qpeak. nth-point print interval = 1