Stormwater Regulations
- Figure 103.1 Standard Title Block for Subdivisions
- Figure 103.2 General Notes for Subdivisions
- Figure 103.3 Summary Table for Inlet Calculations
- Figure 103.4 Summary Table for Storm Sewer & Channel Design
- Figure 103.5 General Notes for Sediment & Erosion Control
- Figure 104.1 Intensity-Duration-Frequency Curves - 5 to 60 Minutes Storms
- Figure 104.2 Depth-Duration-Frequency Curves - 1 to 12 Hour Storms
- Figure 104.3 Rainfall Depth vs. Percent of 24-Hour Precipitation Events
- Table 104.1 Monthly & Annual Precipitation and Evaporation Data
- Table 104.2 Rainfall Depth & Duration Data
- Table 104.3 Runoff Coefficients
- Table 104.4 Hydrologic Soil Groups for Greene County Soils
- Table 104.5 Pilgrim-Cordery Method, Cumulative Depth vs. Duration Data
- Figure 107.1 Sinkhole Collapse Stabilization
- Figure 108.1 Allowable Flooding Depths for Streets & Parking Lots
- Figure 108.2 Gutter Capacity for Greene County Standard 27' Wide Street
- Figure 108.3 Street Flooding Depths - Definition of Variables
- Figure 108.4 Curb Opening Inlets in Sumps - Definitions of Variables
- Figure 108.5 Interception Capacity - Standard Curb Opening Inlet On Grade
- Figure 108.6 Interception Capacity of Standard Curb Opening in Sump
- Figure 108.7 Standard SS-5 Curb Opening Inlet
- Figure 108.8 SS-5 Inlet Riser Capacity
- Figure 108.9 Standard SS-6 Inlet
- Figure 108.10 Typical Reinforcement SS-5 & SS-6 Inlets
- Figure 108.11 Standard SS-6G Inlet
- Figure 108.12 Standard DI-1 Inlet
- Figure 108.13 Interception Capacity of Type DI-1 Inlet
- Figure 108.14 Typical Area Inlet Depression & Concrete Apron
- Figure 109.1 Typical Pipe Connections at Junction Structure
- Figure 109.2 Standard Junction Box
- Figure 109.3 Full Flow Data for Circular Pipe
- Figure 109.4 Full Flow Data for Elliptical Concrete Pipe and Concrete Pipe-Arch
- Figure 109.5 Data for Corrugated Metal Pipe-Arch
- Figure 109.6 Minor Losses at Structures
- Table 109.1 Minimum Easement Widths
- Figure 110.1 Standard Headwalls With 30 & 45 Degree Wingwalls
- Figure 110.2 Standard Straight Concrete Headwall
- Figure 110.3 Standard U-Shaped Headwall
- Figure 110.4 Low Water Crossing For Private Drives
- Figure 111.1 Typical Natural Channel
- Figure 111.2 Typical Grass-Lined Channel
- Figure 111.3 Manning's Roughness Coefficients for Grass-Lined Channel
- Figure 111.4 Concrete Trickle Channel
- Figure 111.5 Typical Grass-Lined Channel with Concrete Trickle Channel
- Figure 111.6 Typical Channel with Concrete Invert and Grass Side Slopes
- Figure 111.7 Trapezoidal Concrete Channel
- Figure 111.8 Rectangular Concrete Channel
- Figure 111.9 Typical Riprap Lined Channel
- Figure 111.10 Typical Roadside Ditches
- Table 111.1 Manning's Roughness Coefficient for Various Channel Linings
- Table 111.2 Maximum Allowable Shear Stress for Various Lining Types
- Figure 112.1 Slot Outlet Definition Sketch
- Figure 112.2 Discharge Capacity - Vertical Slot Outlet, Z=0, W=4"-8"
- Figure 112.3 Discharge Capacity - Vertical Slot Outlet, Z=0, W=12"-24"
- Figure 112.4 Discharge Capacity - Sloping Slot Outlet, Z=0.2, W=4"-8"
- Figure 112.5 Discharge Capacity - Sloping Slot Outlet, Z=0.2, W=12"-24"
- Figure 112.6 Discharge Capacity - Sloping Slot Outlet, Z=0.4, W=4"-8"
- Figure 112.7 Discharge Capacity - Sloping Slot Outlet, Z=0.4, W=12"-24"
- Figure 112.8 Discharge Capacity - Sloping Slot Outlet, Z=0.6, W=4"-8"
- Figure 112.9 Discharge Capacity - Sloping Slot Outlet, Z=0.6, W=12"-24"
- Figure 112.10 Coefficients for Flow Over Wide Embankments
- Table 112.1 Discharge Coefficients for Broad-Crested Weirs
- Figure 114.1 Hay Bale Dike
- Figure 114.2 Silt Fence
- Figure 114.3 Temporary Silt Containment Berm
- Figure 114.4A Sandbag Sediment Trap for Curb Inlets
- Figure 114.4B Area Inlet Protection
- Figure 114.5 Temporary Diversion Berm - Curbed Street
- Figure 114.6 Temporary Sandbag Diversion - Curbed Street
- Figure 114.7A Gravel Filter Dam
- Figure 114.7B Riprap Overflow Spillway
- Figure 114.8 Temporary Sediment Basin
- Figure 114.9 Typical Section - Berm & Outlet Structures
- Figure 114.10 Perforated Riser Pipe
- Figure 114.11 Diversion Dikes & Swales
- Figure 114.12 Riprap Chute Cross-Section
- Figure 114.13 Rock Check Dam
- Figure 114.14 Sandbag Check Dan
- Figure 115.1 Examples of Minimizing Directly Connected Impervious Areas
- Figure 115.2 Vegetative Filter Strip
- Figure 115.3 Typical Grass-Lined Swales
- Figure 115.4 Extended Dry Detention Basin - Dam & Outlet
- Figure 115.5 Trickle Channel for Extended Dry Detention Basin
- Figure 115.6 Extended Dry Detention - Schematic Plan & Section
- Figure 115.7 Extended Wet Detention - Schematic Plan & Section
- Figure 115.8 Sand Filter Schematic
