Dams
vector digital data
Massachusetts Office of Dam Safety (ODS)
20120203
http://www.mass.gov/mgis/dams.htm
The ODS maintains a database that includes detailed information about each dam for operational purposes. Most of the location information was derived from historic data and has been ground-truthed against inspection and ownership reports that are maintained by the ODS. The locations of some dams have not been confirmed. These are pending verification and can be identified through the field 'LocStatus.’Dams regulated by the ODS in accordance with regulation CMR 302 10.00 are listed as ‘Office of Dam Safety’ in the field ‘RegAuth’.Please report any data errors or inconsistencies to the Office of Dam Safety (dam.safety@state.ma.us) or DCR-GIS (chandreyee.lahiri@state.ma.us)
The Massachusetts Dams data layer contains points derived from a dam safety database maintained by the Massachusetts Office of Dam Safety (ODS) . The datalayer contained an identical number of records as the ODS database at the time it was created. New records may have subsequently been added to the ODS database that are not reflected in this GIS datalayer. There are many additional fields and information maintained by the ODS in their database that are not included in the GIS data. These data have been excluded for privacy, security, accuracy and administrative reasons.
As needed
-73.495093
-69.973216
42.866832
41.338518
None
None
Massachusetts Department of Conservation & Recreation (DCR), GIS Department
Chandreyee Lahiri
GIS Specialist
Unknown
251 Causeway Street
Boston
MA
02114
USA
617-626-1325
Chandreyee.Lahiri@state.ma.us
MA Office of Dam Safety, MA Dept. of Conservation & Recreation
ESRI ArcGIS 10.0.2.3200
20120203
publication date
None
Dams
None
Commonwealth of Massachusetts
Vector
Simple
1
FALSE
0
FALSE
FALSE
coordinate pair
0.000000008155898179040842
0.000000008155898179040842
Meter
D North American 1983
GRS 1980
6378137.0
298.257222101
GISDATA.DAMS_PT
Feature Class
0
FID
FID
OID
4
0
0
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
Shape
Feature geometry.
ESRI
Coordinates defining the features.
Shape
Geometry
0
0
0
NATID
Unique ID for the dam in the Office of Dam Safety (ODS) database
Office of Dam Safety (ODS)
NATID
String
254
0
0
RegAuth
Name of the authority responsible for regulating the dam
Office of Dam Safety (ODS)
FERC Jurisdiction
FERC (Federal Energy Regulation Commission) Jurisdiction applies to facilities that generate hydro-electric power and are subject to FERC regulation. May be privately or publicly owned.
Office of Dam Safety
Dams which may be privately or publicly owned but are regulated by and under the jurisdiction of the Massachusetts Office of Dam Safety (ODS) in accordance with regulation CMR 302 10.00.
Non-Jurisdictional – Other
NOT regulated by the ODS or under their jurisdiction. Typically under 6 ft in height and/or under 15 acre-feet in storage and do not have an assigned ‘Hazard Code'. Dams owned and regulated by the Federal Government are also typically Non-jurisdictional but DO have assigned Hazard Codes.
Fish & Wildlife Service Jurisdiction
Dams regulated by the Fish & Wildlife Service (FWS)
Army Corps of Engineers Jurisdiction
Dams regulated by the Army Corps of Engineers (ACOE)
REGAUTH
String
254
0
0
OwnType1
Basic information on owner type. See field 'OwnType2' for more details.
Office of Dam Safety (ODS)
Private
Owned by a private entity
Public
Owned by a public entity
OWNTYPE1
String
254
0
0
OwnType2
More information on owner type: an elaboration of values in field ‘OwnType1’. See ‘OwnType3’ for more details.
Private
Owned by a private entity
Private Association or other non-profit
Owned by a private association or a non-profit
State
Owned by a state agency. More details in ‘OwnType3’ field.
Municipality
Owned by a municipality. More details in ‘OwnType3’ field.
Federal Agency
Owned by a Federal Agency. More details in ‘OwnType3’ field.
Political Subdivision
Owned by a political subdivision that is neither state nor municipal such as a Water district that might have jurisdiction over more than one municipality
OWNTYPE2
String
254
0
0
OwnType3
Detailed information about owner type: an elaboration of values in field ‘OwnType2’. See field ‘MgmtUnit’ for more details (where available).
Private
Dams are privately owned so names, addresses etc are not publicly shared
Private Association or other non-profit
Dams are privately owned so names, addresses etc are not publicly shared
'City of...' OR 'Town of…'
For Municipally owned dams, name of the specific municipal authority.More details (where available) in field ‘MgmtUnit’. Note that where a dam is municipally owned, the Town/City that owns the dam may be different from the Town/City listed in the ‘Town’ field that indicates where the dam is located.
‘Water District…’, 'Water Supply...' or ‘Regional School..’
For dams owned by Political subdivisions, the authority name. There may be other name combinations here.
‘ACOE - U.S. Army Corps of Engineers’ OR ‘FWS - U.S. Fish and Wildlife Service’
For Federally regulated dams, name of regulating authority.
DCR, DFG, DHE, DOT, DCAM, DMH or MBTA
For State owned dams, authority name. More details (where available) in field ‘MgmtUnit’.
OWNTYPE3
String
254
0
0
MgmtUnit
Name of the department, division or other management unit responsible for dams, where available. This is an elaboration of values in field ‘OwnType3’.
MWRA – Operated
Dams are operated by Mass. Water Resource Authority (MWRA)
PL – 566/ Flood Control
Dams in the Watershed Protection & Flood Prevention Program (PL-566)
<Other values>
Unique names that are self-explanatory eg. 'Conservation Commission' , 'Board of Selectman' etc (in the case of Municipally owned dams)
MGMTUNIT
String
254
0
0
Town
Name of the Town or City in which the dam is located
'City of .... ' or 'Town of...'
Name of town in which the dam is located. (Note that where a dam is municipally owned, the Town/City that owns the dam may be different from the Town/City where the dam is located)
TOWN
String
254
0
0
DamLat
Dam location – Latitude in decimal degrees
DAMLAT
Double
19
18
8
DamLong
Dam location – Longitude in decimal degrees
DAMLONG
Double
19
18
8
LocStatus
Indicates whether geographic location of the dam has been verified
Verified
The locations of these dams have been checked against ODS records
NOT Verified
The locations of these dams have yet to be verified – should not be considered checked
LOCSTATUS
String
30
0
0
DamName
Currently recognized and official name of the dam
DAMNAME
String
254
0
0
HazCode
Codes that indicate severity of hazards presented to communities in case of dam failure
High
Located where failure will likely cause loss of life and serious damage to home(s), industrial, commercial facilities, important public utilities, main highway(s) or Railroad(s)
Significant
Located where failure may cause loss of life and damage home(s), industrial or commercial facilities, secondary highway(s) or railroad(s) or cause interruption of use or service of relatively important facilities.
Low
Located where failure may cause minimal property damage to others. Loss of life is not expected.
N/A
No hazard code - Non-jurisdictional dams do not have hazard codes except when owned and regulated by the Federal Government.
HAZCODE
String
254
0
0
20120203
Massachusetts Office of Dam Safety (ODS)
William Salomaa
Director
Unknown
251 Causeway Street
Boston
MA
02114
USA
617-626-1410
William.Salomaa@state.ma.us
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
http://www.mass.gov/mgis/dams.htm
MassGIS Web Documentation
ESRI ArcGIS 10.0.2.3200
Dams
002
002
-73.495093
-69.973216
42.866832
41.338518
1
Dams
None
The Massachusetts Dams data layer contains points derived from a dam safety database maintained by the Massachusetts Office of Dam Safety (ODS) . The datalayer contained an identical number of records as the ODS database at the time it was created. New records may have subsequently been added to the ODS database that are not reflected in this GIS datalayer. There are many additional fields and information maintained by the ODS in their database that are not included in the GIS data. These data have been excluded for privacy, security, accuracy and administrative reasons.
<div style='text-align:Left;'><div><div><p><span>The ODS maintains a database that includes detailed information about each dam for operational purposes. Most of the location information was derived from historic data and has been ground-truthed against inspection and ownership reports that are maintained by the ODS. The locations of some dams have not been confirmed. These are pending verification and can be identified through the field 'LocStatus.’</span></p><p><span /></p><p><span /></p><p><span>Dams regulated by the ODS in accordance with regulation CMR 302 10.00 are listed as ‘Office of Dam Safety’ in the field ‘RegAuth’.</span></p><p><span /></p><p><span /></p><p><span>Please report any data errors or inconsistencies to the Office of Dam Safety (dam.safety@state.ma.us) or DCR-GIS (chandreyee.lahiri@state.ma.us)</span></p><p><span /></p><p><span /></p></div></div></div>
MA Office of Dam Safety, MA Dept. of Conservation & Recreation
Chandreyee Lahiri
Massachusetts Department of Conservation & Recreation (DCR), GIS Department
GIS Specialist
251 Causeway Street
Boston
MA
02114
Chandreyee.Lahiri@state.ma.us
UNITED STATES
617-626-1325
Nathanael Lloyd
Massachusetts Department of Conservation & Recreation (DCR), GIS Department
Director
251 Causeway Street
Boston
MA
02114
Nathanael.Lloyd@state.ma.us
UNITED STATES
617-626-1381
DAMS_PT
002
36932.351828
324781.305994
789461.962049
957356.793623
1
0.000
Projected
GCS_North_American_1983
NAD_1983_StatePlane_Massachusetts_Mainland_FIPS_2001
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20120203
15383400
20120203
15383400
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FGDC
Shapefile
MassGIS
One Ashburton Place, Room 1601
Boston
MA
02108
UNITED STATES
617-619-5611
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http://www.mass.gov/mgis/dams.htm
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William Salomaa
Massachusetts Office of Dam Safety (ODS)
Director
251 Causeway Street
Boston
MA
02114
William.Salomaa@state.ma.us
UNITED STATES
617-626-1410
Chandreyee Lahiri
Massachusetts Department of Conservation & Recreation (DCR), GIS Department
GIS Specialist
251 Causeway Street
Boston
MA
02114
Chandreyee.Lahiri@state.ma.us
UNITED STATES
617-626-1325
MassGIS
mailing and physical address
One Ashburton Place, Room 1601
Boston
MA
02108
UNITED STATES
617-619-5611
Shapefile
Download from http://www.mass.gov/mgis/dams.htm.