Storm Sewer MapStorm Sewer Map DevelopmentDevelopment

Presented by:Presented by:Kurt WhitedKurt Whited

Why Map Storm Sewers?As required by 327 IAC 15-13-14, Allen County must map all knownStorm water outfall conveyance systems under the MS4 Operator’scontrol with a pipe diameter of twelve (12) inches or larger and openDitches with a two (2) foot or larger bottom width within the first five(5)year permit term.

Permit term ends 2009

MS4 – Municipal Separate Storm Sewer System

Conveyance – Any structural process for transferring storm waterbetween at least two (2) points

It’s Fun

Allen County’s PlanMS4 Boundary

Allen County MS4 Area

Allen County’s PlanMS4 Boundary

Subdivisions

Allen County MS4 Subdivisions

Allen County’s PlanMS4 Boundary

Storm Sewers

Subdivisions

Subdivision Storm Sewer Mapping

Required – Outfall Conveyance

Database Design

Manhole

Inlet

Structure

Grade beam or Control outlet

Pipe

Job

Allen County’s PlanMS4 Boundary

Storm Sewers

County Regulated Tiles

Subdivisions

County Regulated Tiles

Estimated Feet of Conveyance = 1,003,200

Allen County’s PlanMS4 Boundary

Storm Sewers

County Regulated Tiles

Subdivisions

County Regulated Ditches

County Regulated Ditches

Estimated Feet of Conveyance = 567,600

Allen County’s PlanMS4 Boundary

Storm Sewers

County Regulated Tiles

Subdivisions

County Regulated Ditches

Industrial Sites

Allen County MS4 Industrial Sites

Allen County’s PlanMS4 Boundary

Storm SewersCounty Regulated Tiles

Subdivisions

County Regulated DitchesIndustrial Sites

Hazardous Chemical Sites Well Head Locations

Septic Locations

What does this mean for Allen County?

Whole county to follow

Used as first response to drainage complaints

Used to locate point source pollution

Used to tabulate number of complaints geographically

Historical referenceWeb access

Delineation of Potential Reconstruction and Maintenance

Questions?