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

Pond Report File: Eagle Rock Proposed (Current).hys Hydrology Studio v 3.0.0.39 10-21-2025 PAPS-1 Stage-Discharge Orifice Culvert / Orifices Cir Culvert Perforated Riser 1 (i) 2 (i) 3 Rise, in 3 3 Hole Diameter, in Span, in 3 3 No. holes No. Barrels 1 1 Invert Elevation, ft Invert Elevation, ft 553.00 554.80 Height, ft Orifice Coefficient, Co 0.60 0.60 Orifice Coefficient, Co Length, ft Barrel Slope, % N-Value, n Weir Weirs Riser Ancillary 1 2 3 Shape / Type Exfiltration, in/hr Crest Elevation, ft Crest Length, ft Angle, deg

Exfiltration, in/hr Crest Elevation, ft Crest Length, ft Angle, deg Weir Coefficient, Cw m = Flows through Culvert, i = Independent Stage-Discharge 556 3 555 2 554 1 553 0 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 0.95 1 Discharge (cfs) Top of Pond 2-yr 10-yr 25-yr 100-yr Pond Outflow