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 = 2.457 cfs Storm Frequency = 10-yr Time to Peak = 12.37 hrs Time Interval = 1 min Hydrograph Volume = 28,753 cuft Inflow Hydrograph = 45 - PR-2A Max. Elevation = 538.57 ft Pond Name = SSBB-2 Max. Storage = 14,024 cuft Pond Routing by Storage Indication Method Center of mass detention time = 2.38 hrs Hydrograph Discharge Table Time Outflow Time Outflow Time Outflow Time Outflow Time Outflow (hrs) (cfs) (hrs) (cfs) (hrs) (cfs) (hrs) (cfs) (hrs) (cfs) 10.13 0.025 10.55 0.074 10.97 0.177 11.38 0.355 11.80 0.633 10.15 0.027 10.57 0.076 10.98 0.182 11.40 0.364 11.82 0.646 10.17 0.029 10.58 0.078 11.00 0.187 11.42 0.373 11.83 0.661 10.18 0.031 10.60 0.080 11.02 0.192 11.43 0.383 11.85 0.678 10.20 0.033 10.62 0.084 11.03 0.197 11.45 0.392 11.87 0.696 10.22 0.035 10.63 0.088 11.05 0.203 11.47 0.402 11.88 0.713 10.23

0.392 11.87 0.696 10.22 0.035 10.63 0.088 11.05 0.203 11.47 0.402 11.88 0.713 10.23 0.037 10.65 0.092 11.07 0.208 11.48 0.411 11.90 0.729 10.25 0.039 10.67 0.096 11.08 0.214 11.50 0.421 11.92 0.747 10.27 0.041 10.68 0.100 11.10 0.219 11.52 0.429 11.93 0.769 10.28 0.042 10.70 0.104 11.12 0.225 11.53 0.439 11.95 0.794 10.30 0.044 10.72 0.108 11.13 0.231 11.55 0.449 11.97 0.816 10.32 0.046 10.73 0.113 11.15 0.239 11.57 0.460 11.98 0.839 10.33 0.048 10.75 0.117 11.17 0.247 11.58 0.472 12.00 0.863 10.35 0.050 10.77 0.122 11.18 0.254 11.60 0.483 12.02 0.888 10.37 0.052 10.78 0.126 11.20 0.262 11.62 0.495 12.03 0.915 10.38 0.054 10.80 0.130 11.22 0.270 11.63 0.507 12.05 0.948 10.40 0.056 10.82 0.135 11.23 0.278 11.65 0.520 12.07 0.982 10.42 0.058 10.83 0.139 11.25 0.286 11.67 0.532 12.08 1.017 10.43 0.060 10.85 0.144 11.27 0.295 11.68 0.545 12.10 1.138 10.45 0.062 10.87 0.149 11.28 0.303 11.70 0.557 12.12 1.306 10.47 0.064 10.88 0.153 11.30 0.311 11.72 0.570 12.13 1.487 10.48 0.066 10.90 0.158 11.32 0.320 11.73 0.584

0.153 11.30 0.311 11.72 0.570 12.13 1.487 10.48 0.066 10.90 0.158 11.32 0.320 11.73 0.584 12.15 1.665 10.50 0.068 10.92 0.163 11.33 0.328 11.75 0.595 12.17 1.802 10.52 0.070 10.93 0.168 11.35 0.337 11.77 0.607 12.18 1.913 10.53 0.072 10.95 0.173 11.37 0.346 11.78 0.620 12.20 2.021 Printed values > 1% of Qpeak. nth-point print interval = 1