Aerial Mapping for Phase II Storm Water

Partnership

Environmental Partners was built on the core philosophy that a strict focus on client service through partnership creates added value for our clients.

What's New

Partnership

Environmental Partners was built on the core philosophy that a strict focus on client service through partnership creates added value for our clients.

What's New

Aerial Mapping for Phase II Storm Water

Hanover, Massachusetts

Overview

Environmental Partners assisted the Town of Hanover with the compilation and maintenance of a Town-wide Geographic Information Systems (GIS) map.  The impetus for these activities was compliance with the mapping components of the Environmental Protection Agency’s Phase II Storm Water Rule and the Massachusetts Executive Office of Environmental Affairs Watershed Initiatives program.  During the planning phase input was solicited from the DPW, Board of Health, Conservation Commission, Water Department, Planning Board and Assessor’s Office.

Approach

Environmental Partners worked with the Town to solicit funding through the State Revolving Fund (SRF) Massachusetts Water Pollution Abatement Trust loan by focusing the mapping on the need to protect the Town’s water supply and critical water resources.  The Town was also convinced to use the planimetric street map centerline as an approximation of its water distribution system for the development of a water system hydraulic model base map.

Solution

Based on the input received in local workshops, Environmental Partners solicited bids from aerial mapping firms and assisted the Town in procuring a mapping company.  Aerial photography was conducted to obtain 1”=660 scale images.  Environmental Partners coordinated the planimetric mapping with the Department of Public Works, and the Town Assessors Office, and reviewed the overall quality of the work.  As the Town’s Water Master Plan consultant, the mapping activities saved the Town an estimated $50,000 in GPS mapping of the Town’s roadway centerline.

Environmental Partners also took the Town’s existing storm drain atlas maps and converted them into a geodatabase for use in ArcView.  Drainage structures not captured in the aerial mapping were collected by Global Positioning System (GPS) survey during field investigations.  We also developed a geodatabase of the Town’s assessor maps and assisted the Town with the planning for the development of an ArcView 8.3 platform for Town manipulation of the mapping information.