PPT Slide

Step 1: Watershed Retrofit Inventory

(Continued)

Useful Materials:
• Aerial Photographs
• Drainage Maps
• Gas, Water, and Sewer Maps
• Zoning/Tax Assessor Maps
• Topographic Maps

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Step 1 tasks are greatly facilitated when good baseline information is available such as: topographic mapping (a 5 ' contour interval is quite satisfactory), low altitude aerial photographs (where available), storm drain master plans, and land use maps (zoning or tax maps are best).