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 265 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 100-yr Rainfall=5.25"
Prepared by Greenman-Pedersen, Inc  Printed 12/18/2025
HydroCAD® 10.20-7a s/n 04560 © 2025 HydroCAD Software Solutions LLC  Page 190

  Subcatchment ATO: Area to Offsite
  Hydrograph

  Runoff
  0.5  0.47 cfs
  extreme_precip_tables_output (29) 24-hr S1 100-yr
  0.45  Rainfall=5.25"
  Runoff Area=0.190 ac
  Runoff Volume=0.049 af
  0.4
  Runoff Depth>3.09"
  Flow Length=60'
  0.35  Slope=0.0050 '/'
  Tc=30.0 min
  0.3  CN=80
  Flow (cfs)

  0.25

  0.2

  0.15

  0.1

  0.05

  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)