PHASE I – Creation of a Township Index Map

Previous GIS work done for East Deer Township included the creation of a hardcopy index map and detailed maps of the Township.  Relevant GIS data, such as the municipal boundary, storm sewer, roads, buildings, rivers, and streams were included on these maps.  Locations can be determined by reviewing Township records, drainage maps, and existing storm drain maps.  Field surveys may be conducted to locate and/or verify existing storm sewers, inlets, and outfalls.  After data collection and notation is complete, one set of these maps will be returned to Senate Engineering to aid surveyors in locating the outfall structures and to assist with GIS mapping.  

PHASE II – Surveying Locations of Storm Outfall Structures

After East Deer Township returned the index map and detailed maps with notations indicative of all known outfall structures, Senate Engineering will survey each storm outfall location.  The location of these features will be collected primarily with mapping grade (sub-meter accuracy) Global Positioning System (GPS) instruments and when required, traditional surveying equipment.  Each feature will also be assigned a unique identification number.

PHASE III – Creation of Storm Outfall Layer

This phase will involve post-processing the surveyed data, creating a GIS layer of the collected stormwater outfalls features, and attributing the data.  This accurately surveyed layer of storm outfalls in a GIS will aid in future identification and removal of illicit discharges.

PHASE IV – Creation of Storm Sewer Layers

This phase will involve digitizing any additional storm sewer lines and inlets, and attributing the data. The storm sewer layer will be created from the notations made on the index map and detailed maps by the Township, and from any existing paper maps. 

PHASE V – Creation of a Township Map Book

This phase will involve the creation of a standard map book layout and hardcopy maps for the Township.  The intent of this book is to provide the Township hardcopy maps that are of a large enough scale to be easily readable but of a small enough size that they can be easily stored or carried in a vehicle by field personnel.  Senate will retain the set up of the map book so that at the Township’s request updated maps can be produced quickly.  The completed storm sewer and outfall maps will greatly facilitate all future stormwater management planning.