MS4 Outfall & BMP Mapping Using GIS

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Data Collection – Outfall Map • Next, we created a map showing all the outfalls. This included data such as site number, type of structure, and if it is a dry weather flow. • A dry weather flow is an outfall that has water flowing when there has been no rain for at least three days.
Data Collection – Outfall Map • What Should My Map Look Like? Understanding the location of your separate storm sewer system outfalls is the key to effectively managing stormwater runoff and protecting water quality. Not all system maps will look alike, but they should contain the same basic information and ultimately serve as a tool for your employees responsible for implementing the IDD&E Program (Illicit Discharge Detection & Elimination), as well as other components of the Stormwater Management Program. • SCALE. The map must be of a scale that shows street-level detail and extends beyond the service boundaries of the municipal storm sewer system. A scale between 1:10,000 and 1:25,000 may be appropriate for many small MS4s that cover a large land area. This scale is acceptable as long as street-level detail can be obtained. Otherwise you should use a map scale that best depicts specific location information for each outfall, as technicians in the field will need street-level detail in order to effectively locate and monitor outfalls.
Page 1 and 2: Mark E Stivers, AICP Director of Pl
Page 3 and 4: MCM#3 - ILLICIT DISCHARGE DETECTION
Page 6 and 7: Where to Begin…
Page 8 and 9: Data Collection - Key Terms • Pol
Page 10 and 11: Data Collection • Identify major
Page 12 and 13: Data Collection - Receiving Water B
Page 14 and 15: Data Collection - Collecting Outfal
Page 18: Data Collection - Outfall Map • S
Page 21 and 22: Data Collection - Collecting Outfal
Page 23 and 24: Data Collection - Collecting BMP Da
Page 31 and 32: Data Collection Trimble® GeoXH® 2
Page 34: Contact info : markstivers@easthemp

MS4 Outfall & BMP Mapping Using GIS

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