SEED shows point locations of Maine mussel seed conservation areas at 1:24,000 scale. Data for this coverage were screen digitized on a 1:24000 scale base using descriptions contained in Maine Department of Marine Resources (MDMR) rules. Coastal arcs from Maine Office of GIS 1:24000 COAST coverage were used to close polygons where needed.
RailRouteSys is a statewide railroad coverage for Maine at 1:24000 scale or better. The data was extracted from MEDOT.MErail24 files and an updated database by MaineDOT staff starting in 2009. Attributes include: Route Code, Calibrated, Owner, Operator, Track type, Status, Passenger, and Common Name. Attribute and linework accuracy were verified using USGS, MEGIS, Maine Department of Transportation resources, and some local knowledge. Attributes of sidings and yards is difficult to determine, and has not been fully checked. In yards, exact line accuracy may be lacking. Accuracy of main and branch routes is expected to be very good. The attribution of the dataset was updated in 2011 with information provided by MaineDOT. In October of 2006, MaineDOT rail coordinators George Jackman and Nate Moulton helped to identify the rail routes owned by the State of Maine and managed by MaineDOT. The state owned rail (including MaineDOT managed)was updated in April of 2011 by the Results and Information Office of the Maine Department of Transportation.
MHB_BeachWastewaterOutfalls is a subset of WASTEWATER_OUTFALLS created for the Maine Healthy Beach Program. It contains the locations of the ends of active outfall pipes and the locations of the ends of active Combined Sewer Overflow (CSO), associated with the treatment facilities licensed under the National Pollution Discharge Elimination System (NPDES) that occur near beaches on the Maine coast. WASTEWATER_OUTFALLS data was collected under two separate contracts and was overseen by the Maine Department of Environmental Protection (MEDEP). Part 1 was from 1998 to 1999 under a Geo-graphics contract and Part 2 was from 2000 to 2001 under a contract with Northern Ecological Associates. The list of NPDES facilities was taken from sites within the EPA's Permit Compliance System (PCS) database with "active outfalls". Data was gathered at facilities that were known to be active as of June 2000. All data was collected using Trimble Pro-XR GPS receivers that have corrected accuracy of +/- 1 meter.