Name: Maine Dam Impoundments

Display Field: NAME

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The Maine Dams dataset, maintained by the Maine Department of Environmental Protection (DEP) is a comprehensive spatial and tabular data base of dams, levees, impoundments, and barriers that are in and around Maine’s lakes, streams, and rivers. It includes both current and historical facilities. Spatial and tabular data will be updated on an ongoing basis. The Maine DEP Dams layers were created from various sources, including a historical dams dataset based on the Inventory of Dams on Maine Waterways (1973), the Maine Emergency Management Agency (MEMA) dams datasets, the Maine Stream Habitat Viewer (MSHV) dataset, and others. ID fields were created and maintained in order to cross-reference the DEP dataset with the National Inventory of Dams (NID), MEMA, Federal Energy Regulatory Commission (FERC) Projects. Additional fields have been added to indicate the status (present, removed, breached, etc.), the presence and types of fishways, and the FERC licensing status of dams. </SPAN></P><P><SPAN>The Dam Impoundments layer is derived from a variety of sources including FERC project documents, the National Hydrography Dataset (NHD), and aerial imagery. They are approximate and not intended for engineering or legal use. </SPAN></P><P><SPAN>Fields:</SPAN></P><P><SPAN>FERC_ID: FERC Project Number (https://www.ferc.gov/licensing)</SPAN></P><P><SPAN>NID_ID: National Inventory of Dams ID (https://nid.sec.usace.army.mil/#/)</SPAN></P><P><SPAN>DEP_ID: Numeric ID field. Derived partially from 1973 Inventory of Maine Dams. Not fully populated.</SPAN></P><P><SPAN>MEMA_ID: ID assigned to dams by MEMA (text field)</SPAN></P><P><SPAN>FERC_DAM_NAME: FERC Project Name (https://www.ferc.gov/licensing)</SPAN></P><P><SPAN>NAME: Commonly used or official dam name</SPAN></P><P><SPAN>GNIS_NAME: Officially recognized Federal name of waterbody from Geographic Names Information System (GNIS)</SPAN></P><P><SPAN>FERC_LICENSE_STATUS: Indicates whether a dam with a FERC_ID is an active or expired license, has an exemption, or has been removed</SPAN></P><P><SPAN>HUC8: 8-digit HUC ID (Watershed Boundary Dataset)</SPAN></P><P><SPAN>STATUS: Most recent known status of the physical structure of the dam</SPAN></P><P><SPAN>STATUS_COMMENTS: Comments on the source of the dam's status information, dates of removal, or other relevant information</SPAN></P><P><SPAN>LAYER: Source of impoundment data (if known)</SPAN></P></DIV></DIV></DIV>

Service Item Id: b735d420d68b4387882349b724b2bd35

Copyright Text: Maine Department of Environmental Protection, Maine Emergency Management Agency Please contact Becky Schaffner (becky.schaffner@maine.gov) with questions.

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Extent:

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YMin: 4786570.855799999
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Spatial Reference: 26919  (26919)

Drawing Info:

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Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• FERC_ID ( type: esriFieldTypeString, alias: FERC_ID, length: 20 )
• NID_ID ( type: esriFieldTypeString, alias: NID_ID, length: 20 )
• DEP_ID ( type: esriFieldTypeString, alias: DEP_ID, length: 20 )
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