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Home My WebLink About06/16/15 stormwatereasement2015 WinTR-55 Current Data Description --- Identification Data --- User: LSB Date: 4/20/2015 Project: Superior Welding Exist Site Units: English SubTitle: Areal Units: Acres State: Iowa County: Linn Filename: Y:\\Projects\\4914.014\\Stormwater Calculations\\existing site.w55 --- Sub-Area Data --- Name Description Reach Area(ac) RCN Tc ------------------------------------------------------------------------------ exist Outlet 1.24 79 .136 Total area: 1.24 (ac) --- Storm Data -- Rainfall Depth by Rainfall Return Period 2-Yr 5-Yr 10-Yr 25-Yr 50-Yr 100-Yr 0-Yr (in) (in) (in) (in) (in) (in) (in) -------------------------------------------------------------------------------- 3.1 4.0 4.6 5.2 5.8 6.5 .0 Storm Data Source: Linn County, IA (NRCS) Rainfall Distribution Type: Type II Dimensionless Unit Hydrograph: <standard> ================================================================================== LSB Superior Welding Exist Site Linn County, Iowa Storm Data Rainfall Depth by Rainfall Return Period 2-Yr 5-Yr 10-Yr 25-Yr 50-Yr 100-Yr 0-Yr (in) (in) (in) (in) (in) (in) (in) -------------------------------------------------------------------------------- 3.1 4.0 4.6 5.2 5.8 6.5 .0 Storm Data Source: Linn County, IA (NRCS) Rainfall Distribution Type: Type II Dimensionless Unit Hydrograph: <standard> ================================================================================== LSB Superior Welding Exist Site Linn County, Iowa WinTR-55, Version 1.00.10Page 1 4/20/2015 1:25:20 PM Watershed Peak Table Sub-Area Peak Flow by Rainfall Return Period or Reach 5-Yr Identifier (cfs) ---------------------------------------------------------------------------------- SUBAREAS exist 3.53 REACHES OUTLET 3.53 ================================================================================== LSB Superior Welding Exist Site Linn County, Iowa Hydrograph Peak/Peak Time Table Sub-Area Peak Flow and Peak Time (hr) by Rainfall Return Period or Reach 5-Yr Identifier (cfs) (hr) ---------------------------------------------------------------------------------- SUBAREAS exist 3.53 11.96 REACHES OUTLET 3.53 ================================================================================== LSB Superior Welding Exist Site Linn County, Iowa Sub-Area Summary Table Sub-Area Drainage Time of Curve Receiving Sub-Area Identifier Area Concentration Number Reach Description (ac) (hr) -------------------------------------------------------------------------------- exist 1.24 0.136 79 Outlet Total Area: 1.24 (ac) ================================================================================== LSB Superior Welding Exist Site Linn County, Iowa Sub-Area Time of Concentration Details WinTR-55, Version 1.00.10Page 2 4/20/2015 1:25:20 PM Sub-Area Flow Mannings's End Wetted Travel Identifier/ Length Slope n Area Perimeter Velocity Time (ft) (ft/ft) (sq ft) (ft) (ft/sec) (hr) -------------------------------------------------------------------------------- exist SHEET 100 0.0100 0.050 0.091 SHALLOW 260 0.0100 0.050 0.045 Time of Concentration .136 ======== ================================================================================== LSB Superior Welding Exist Site Linn County, Iowa Sub-Area Land Use and Curve Number Details Sub-Area Hydrologic Sub-Area Curve Identifier Land Use Soil Area Number Group (ac) -------------------------------------------------------------------------------- exist Open space; grass cover < 50% (poor) B 1.24 79 Total Area / Weighted Curve Number 1.24 79 ==== == ================================================================================== WinTR-55, Version 1.00.10Page 3 4/20/2015 1:25:20 PM WinTR-55 Current Data Description --- Identification Data --- User: LSB Date: 4/20/2015 Project: Superior Welding Exist Site Units: English SubTitle: Areal Units: Acres State: Iowa County: Linn Filename: Y:\\Projects\\4914.014\\Stormwater Calculations\\proposed site.w55 --- Sub-Area Data --- Name Description Reach Area(ac) RCN Tc ------------------------------------------------------------------------------ developed tobasin 1.24 91 0.1 Total area: 1.24 (ac) --- Storm Data -- Rainfall Depth by Rainfall Return Period 2-Yr 5-Yr 10-Yr 25-Yr 50-Yr 100-Yr 0-Yr (in) (in) (in) (in) (in) (in) (in) -------------------------------------------------------------------------------- 3.1 4.0 4.6 5.2 5.8 6.5 .0 Storm Data Source: Linn County, IA (NRCS) Rainfall Distribution Type: Type II Dimensionless Unit Hydrograph: <standard> ================================================================================== LSB Superior Welding Exist Site Linn County, Iowa Storm Data Rainfall Depth by Rainfall Return Period 2-Yr 5-Yr 10-Yr 25-Yr 50-Yr 100-Yr 0-Yr (in) (in) (in) (in) (in) (in) (in) -------------------------------------------------------------------------------- 3.1 4.0 4.6 5.2 5.8 6.5 .0 Storm Data Source: Linn County, IA (NRCS) Rainfall Distribution Type: Type II Dimensionless Unit Hydrograph: <standard> ================================================================================== LSB Superior Welding Exist Site Linn County, Iowa WinTR-55, Version 1.00.10Page 1 4/20/2015 1:26:15 PM Watershed Peak Table Sub-Area Peak Flow by Rainfall Return Period or Reach 5-Yr Identifier (cfs) ---------------------------------------------------------------------------------- SUBAREAS developed 5.58 REACHES tobasin 5.58 Down 1.47 OUTLET 1.47 ================================================================================== LSB Superior Welding Exist Site Linn County, Iowa Hydrograph Peak/Peak Time Table Sub-Area Peak Flow and Peak Time (hr) by Rainfall Return Period or Reach 5-Yr Identifier (cfs) (hr) ---------------------------------------------------------------------------------- SUBAREAS developed 5.58 11.93 REACHES tobasin 5.58 11.93 Down 1.47 12.11 OUTLET 1.47 ================================================================================== LSB Superior Welding Exist Site Linn County, Iowa Structure Output Table Reach Peak Flow (PF), Storage Volume (SV), Stage (STG) Identifier by Rainfall Return Period Structure Identifier 5-Yr ---------------------------------------------------------------------------------- Reach: tobasin Pipe : basin 6(in) PF (cfs) 1.47 SV (ac ft) .10 STG (ft) .69 WinTR-55, Version 1.00.10Page 2 4/20/2015 1:26:15 PM ================================================================================== LSB Superior Welding Exist Site Linn County, Iowa Sub-Area Summary Table Sub-Area Drainage Time of Curve Receiving Sub-Area Identifier Area Concentration Number Reach Description (ac) (hr) -------------------------------------------------------------------------------- developed 1.24 0.100 91 tobasin Total Area: 1.24 (ac) ================================================================================== LSB Superior Welding Exist Site Linn County, Iowa Reach Summary Table Receiving Reach Routing Reach Reach Length Method Identifier Identifier (ft) ---------------------------------------------------------------------- tobasin Outlet STRUCTURE(basin) ================================================================================== LSB Superior Welding Exist Site Linn County, Iowa Sub-Area Time of Concentration Details Sub-Area Flow Mannings's End Wetted Travel Identifier/ Length Slope n Area Perimeter Velocity Time (ft) (ft/ft) (sq ft) (ft) (ft/sec) (hr) -------------------------------------------------------------------------------- developed SHEET 100 0.0100 0.011 0.027 SHALLOW 260 0.0100 0.050 0.045 Time of Concentration 0.1 ======== ================================================================================== LSB Superior Welding Exist Site Linn County, Iowa WinTR-55, Version 1.00.10Page 3 4/20/2015 1:26:15 PM Sub-Area Land Use and Curve Number Details Sub-Area Hydrologic Sub-Area Curve Identifier Land Use Soil Area Number Group (ac) -------------------------------------------------------------------------------- developed Open space; grass cover > 75% (good) B .23 61 Paved parking lots, roofs, driveways B 1.01 98 Total Area / Weighted Curve Number 1.24 91 ==== == ================================================================================== LSB Superior Welding Exist Site Linn County, Iowa Reach Channel Rating Details Reach Reach Reach Friction Bottom Side Identifier Length Manning's Slope Width Slope (ft) n (ft/ft) (ft) -------------------------------------------------------------------------------- tobasin (This reach is a structure: basin) Reach End Top Friction Identifier Stage Flow Area Width Slope (ft) (cfs) (sq ft) (ft) (ft/ft) -------------------------------------------------------------------------------- tobasin (This reach is a structure: basin) ================================================================================== LSB Superior Welding Exist Site Linn County, Iowa Structure Description - User Entered Surface Height Surface Reach Area @ Above Area @ Pipe Head on Weir Identifier Crest Crest Ht Above Diameter Pipe Length (ac) (ft) (ac) (in) (ft) (ft) -------------------------------------------------------------------------------- tobasin .13 1 .14 6 2 ================================================================================== LSB Superior Welding Exist Site Linn County, Iowa Structure Rating Details - Computed WinTR-55, Version 1.00.10Page 4 4/20/2015 1:26:15 PM Reach Pool Flows (cfs) @ Pipe Diameter Idendifier Stage Storage Dia #1 Dia #2 Dia #3 (ft) (ac ft) 6in in in -------------------------------------------------------------------------------- basin 0 0.00 0.000 0.25 0.03 1.333 0.5 0.07 1.414 1 0.14 1.563 2.5 0.36 1.943 5 0.78 2.449 10 1.80 3.231 ================================================================================== WinTR-55, Version 1.00.10Page 5 4/20/2015 1:26:15 PM