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 211 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 136

  Subcatchment DA 2: Drainage Area 2
  Hydrograph

  0.065  Runoff
  0.06 cfs
  0.06  extreme_precip_tables_output (29) 24-hr S1 25-yr
  Rainfall=3.85"
  0.055  Runoff Area=0.010 ac
  Runoff Volume=0.003 af
  0.05
  Runoff Depth>3.62"
  Flow Length=35'
  0.045
  Slope=0.0100 '/'
  0.04  Tc=0.8 min
  CN=98
  Flow (cfs)

  0.035

  0.03

  0.025

  0.02

  0.015

  0.01

  0.005

  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)