Southtowns Record

PB Agenda Packet 8.13.2026

Government
Town of West Seneca
Board
Planning Board
Meeting
Aug 13, 2026, 6:00 p.m.
Posted by publisher
Jul 28, 2026
Kind
Agenda packet
Topics
Water, sewer and drainage, Roads and traffic, Housing, Zoning and land use, Parks and recreation, Budget and taxes, Public safety

Original document

Same meeting

Text · page 517 of 1174

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WEST SENECA - POST DEVELOPMENT
E_App E_Post-Development Model_REV 2 NY-West Seneca 24-hr S1 25-yr Rainfall=3.84"
Prepared by Labella Associates  Printed 7/26/2026
HydroCAD® 10.20-6a s/n 09581 © 2024 HydroCAD Software Solutions LLC  Page 50

  Summary for Reach DP-1: Design Point

[40] Hint: Not Described (Outflow=Inflow)

Inflow Area =  16.122 ac, 18.93% Impervious, Inflow Depth > 2.15" for 25-yr event
Inflow  =  16.38 cfs @ 12.19 hrs, Volume=  2.887 af
Outflow  =  16.38 cfs @ 12.19 hrs, Volume=  2.887 af, Atten= 0%, Lag= 0.0 min

Routing by Dyn-Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.01 hrs

  Reach DP-1: Design Point
  Hydrograph

  Inflow
  18  16.38 cfs  Outflow
  17
  16
  16.38 cfs
  Inflow Area=16.122 ac
  15
  14
  13
  12
  11
  Flow (cfs)

  10
  9
  8
  7
  6
  5
  4
  3
  2
  1
  0
  0 2 4  6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72
  Time (hours)

  Page 517 of 1174