Southtowns Record

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

Original document

Same meeting

Text · page 58 of 351

Read the whole document on one page (all 351 pages, each with its own heading)

WNY-2500056.00_HydroCAD  extreme_precip_tables_output (29) 24-hr S1 25-yr Rainfall=3.85"
Prepared by Greenman-Pedersen, Inc  Printed 12/18/2025
HydroCAD® 10.20-7a s/n 04560 © 2025 HydroCAD Software Solutions LLC  Page 49

  Summary for Link PRE: Pre-Development

Inflow Area =  0.690 ac, 20.29% Impervious, Inflow Depth > 2.24" for 25-yr event
Inflow  =  1.46 cfs @ 12.09 hrs, Volume=  0.129 af
Primary  =  1.46 cfs @ 12.09 hrs, Volume=  0.129 af, Atten= 0%, Lag= 0.0 min

Primary outflow = Inflow, Time Span= 0.00-24.00 hrs, dt= 0.05 hrs

  Link PRE: Pre-Development
  Hydrograph

  Inflow
  1.46 cfs  Primary
  1.46 cfs
  Inflow Area=0.690 ac

  1
  Flow (cfs)

  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)