Session 2 OutlineSession 2 Outline

• Background

• Aerial Maps

• USGS Maps

• Digitized CADD Maps

• Data base support

• Background

• Aerial Maps

• USGS Maps

• Digitized CADD Maps

• Data base support

• Global Positioning

System (GPS)

• Geographic Information

System (GIS)

System Mapping Tools

Background InformationBackground Information

Stream

Channel

Stream

Channel Drainage

Ditch/Swale

Drainage

Ditch/Swale

Highway

Lanes

Highway

Lanes

Median

Drain

Median

Drain

OEPA’s definition of an Outfall.

Permit requires outfall to be mapped

Background Information

Culvert

1

Ditch

Confluence

2

3

4

5

= Outfall

Aerial MapsAerial Maps

Can these be used to locate outfalls?

Determine additional uses for inventory- Design, support for other inventories, etc.

Level of use- aid in cost estimates for inventory

Will this map approach aid with illicit detection?

Can these be used to locate outfalls?

Determine additional uses for inventory- Design, support for other inventories, etc.

Level of use- aid in cost estimates for inventory

Will this map approach aid with illicit detection?

USGE MapsUSGE Maps

Digitized CADD MapsDigitized CADD Maps

Data Base SupportData Base Support

Tracking system attribute data

Design level support Reporting Evaluation/Assessment Inventory organization

and location labeling

Tracking system attribute data

Design level support Reporting Evaluation/Assessment Inventory organization

and location labeling

Global Positioning System - GPSGlobal Positioning System - GPS

Locate outfalls Latitude/Longitude

coordinates – Tie into state plain coordinates

Assist in establishing unique outfall labeling system

Reporting by location Locate Illicit sources

Locate outfalls Latitude/Longitude

coordinates – Tie into state plain coordinates

Assist in establishing unique outfall labeling system

Reporting by location Locate Illicit sources

Geographic Information System-GISGeographic Information System-GIS

Very flexible Multiple layer

coverage's for data analysis

Becoming more and more main stream

Cost is becoming manageable

Very flexible Multiple layer

coverage's for data analysis

Becoming more and more main stream

Cost is becoming manageable

Session 2 ReviewSession 2 Review

• Background – Outfall Definition

• Aerial Maps – Best used in combination with digital map

• USGS Maps – Can use, scale and accuracy an issue, but

allowed by permit – Low to medium level of coverage

• Digitized CADD Maps – Medium to high level of coverage, can begin engineering level activities

• Data base support – Necessary support for all map types

• Background – Outfall Definition

• Aerial Maps – Best used in combination with digital map

• USGS Maps – Can use, scale and accuracy an issue, but

allowed by permit – Low to medium level of coverage

• Digitized CADD Maps – Medium to high level of coverage, can begin engineering level activities

• Data base support – Necessary support for all map types

• Global Positioning System (GPS) – Key for locating outfall Lat/Long data

• Geographic Information System (GIS) – Becoming tool of choice, High level of coverage, can include engineering level data.

System Mapping Tools

Questions and AnswersQuestions and Answers

End of Session 2End of Session 2

Session 3 – Basic Approach for

Identifying Illicit Discharges

Session 3 – Basic Approach for

Identifying Illicit Discharges