5A.-ENGINEER'S REPORT

Government: Town of Aurora
Board: Town Board
Meeting: Feb 4, 2026
Kind: Other
Topics: Water, sewer and drainage, Zoning and land use, Public safety

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WNY-2500056.00_HydroCAD  extreme_precip_tables_output (29) 24-hr S1 10-yr Rainfall=3.14"
Prepared by Greenman-Pedersen, Inc  Printed 12/18/2025
HydroCAD® 10.20-7a s/n 04560 © 2025 HydroCAD Software Solutions LLC  Page 96

  Pond RCVR 1: RCVR 1
  Hydrograph

  Inflow
  0.43 cfs  Primary
  0.46  0.43 cfs
  0.44
  0.42
  Inflow Area=0.340 ac
  0.4
  0.38  Peak Elev=901.10'
  0.36
  0.34  8.0"
  0.32
  0.3
  0.28
  Round Culvert
  Flow (cfs)

  0.26
  0.24  n=0.013
  0.22
  0.2  L=59.0'
  0.18
  0.16
  0.14
  S=0.0041 '/'
  0.12
  0.1
  0.08
  0.06
  0.04
  0.02
  0
  0  1  2  3  4  5  6  7  8  9  10  11 12 13 14  15  16  17  18  19  20 21  22  23  24
  Time (hours)