HOLIDAY - DÍA FERIADO In observance of Veterans Day, our offices will be closed on Monday, November 11, 2024. Regular business hours will resume on Tuesday, November 12 at 8:30 a.m.En conmemoración del Día de los Veteranos, nuestras oficinas estarán cerrados el lunes, 11 de noviembre de 2024. El horario laboral regular se reanudará el martes, 12 de noviembre a las 8:30 am.
Dam Operation Permits Any person who owns or operates a dam that has the capacity to store greater than one thousand four hundred (1,400) normal storage acre-feet of water and has a control structure and that does not impound water for a public water supply system as defined in R.I. Gen. Laws § 46-13-2 is required to obtain dam operation permit from RIDEM to raise or lower the water level behind the dam. The owner or operator shall apply for a permit, and until such time as a permit is issued, the owner or operator shall operate the dam in a manner that is consistent with the historic use as determined by DEM. Enforcement of this requirement is in accordance with chapters 17.1 and 17.6 of Title 42. There are six dams that are subject to these rules and regulations: Flat River Reservoir Dam (167) in Coventry The Dam has the capacity to store 4,195 normal storage acre-feet. OBJECTID 143 STATE_ID 167 DAM_NAME FLAT RIVER RESERVOIR AKA JOHNSON'S POND NID RI00601 GIS_Lon -71.59 LONGITUDE -71.59 GIS_Lat 41.69 LATITUDE 41.69 COUNTY KENT Muni COVENTRY Waterbody PAWTUXET RIVER-SOUTH BRANCH YrBuilt 1,873 Purpose R DW ConsType GRAVITY, EARTH Length 750 Ac_Ft 4,195 HAZARD HIGH 2020 Biennial Inspection Report: Flat River Reservoir Dam (167) PDF file, about 18mbmegabytes DEM Letter: Notice of Flat River Dam Permit Requirement (June 2023) PDF file, less than 1mbmegabytes DEM Letter: Flat River Dam Historic Use (July 2022) PDF file, less than 1mbmegabytes Olney Pond Dam (102) in Lincoln The Dam has the capacity to store 1,490 normal storage acre-feet. OBJECTID 88 STATE_ID 102 DAM_NAME OLNEY POND AKA LINCOLN WOODS PARK NID RI01702 GIS_Lon -71.43 LONGITUDE -71.43 GIS_Lat 41.89 LATITUDE 41.89 COUNTY PROVIDENCE Muni LINCOLN Waterbody THREADMILL BROOK YrBuilt 1,883 Purpose R DW ConsType MASONRY,GRAVITY,EARTH Length 220 Ac_Ft 1,490 HAZARD HIGH Dam Visual Inspection Report: Olney Pond (102) PDF file, about 8mbmegabytes Hazard Potential Assessment: Olney Pond Dam (102_is) PDF file, about 7mbmegabytes DEM Memorandum: Notice of Olney Pond Dam Permit Requirement (June 2023) PDF file, less than 1mbmegabytes DEM Memorandum: Olney Pond Dam Historic Use (July 2022) PDF file, less than 1mbmegabytes Pascoag Reservoir Upper Dam (016) in Burrillville The Dam has the capacity to store 5,000 normal storage acre feet. OBJECTID 12 STATE_ID 016 DAM_NAME PASCOAG RESERVOIR UPPER AKA ECHO LAKE NID RI00304 GIS_Lon -71.71 LONGITUDE -71.71 GIS_Lat 41.95 LATITUDE 41.95 COUNTY PROVIDENCE Muni BURRILLVILLE Waterbody BRANDY BROOK YrBuilt 1,860 Purpose R DW ConsType GRAVITY,EARTH Length 475 Ac_Ft 5,000 HAZARD HIGH Dam Visual Inspection Report: Pascoag Reservoir Upper Dam (016) PDF file, about 4mbmegabytes Hazard Potential Assessment: Pascoag Reservoir Upper Dam (016_is) PDF file, about 10mbmegabytes DEM Letter: Notice of Pascoag Reservoir Dam Permit Requirement (June 2023) PDF file, less than 1mbmegabytes DEM Letter: Pascoag Reservoir Dam Historic Use (July 2022) PDF file, less than 1mbmegabytes Slatersville Reservoir Upper Dam (043) in North Smithfield The Dam has the capacity to store 1,970 normal storage acre-feet. OBJECTID 37 STATE_ID 043 DAM_NAME SLATERSVILLE RESERVOIR UPPER AKA NID RI02501 GIS_Lon -71.59 LONGITUDE -71.59 GIS_Lat 41.99 LATITUDE 41.99 COUNTY PROVIDENCE Muni NORTH SMITHFIELD Waterbody BRANCH RIVER YrBuilt 1,886 Purpose DW ConsType MASONRY,GRAVITY,EARTH Length 256 Ac_Ft 1,970 HAZARD HIGH Dam Visual Inspection Report: Slatersville Reservoir Upper (043) PDF file, about 2mbmegabytes Hazard Potential Assessment: Slatersville Reservoir Upper Dam (043_is) PDF file, about 10mbmegabytes DEM Letter: Notice of Slatersville Dam Permit Requirement (June 2023) PDF file, less than 1mbmegabytes DEM Letter: Slatersville Dam Historic Use (July 2022) PDF file, less than 1mbmegabytes Stillwater Reservoir Dam (108) in Smithfield The Dam has the capacity to store 2,400 normal storage acre-feet. OBJECTID 92 STATE_ID 108 DAM_NAME STILLWATER RESERVOIR AKA STUMP POND NID RI03101 GIS_Lon -71.54 LONGITUDE -71.54 GIS_Lat 41.91 LATITUDE 41.91 COUNTY PROVIDENCE Muni SMITHFIELD Waterbody WOONASQUATUCKET RIVER YrBuilt 1,918 Purpose FR DW ConsType CONCRETE,EARTH,OTHER Length 670 Ac_Ft 2,400 HAZARD HIGH Dam Visual Inspection Report: Stillwater Reservior Dam (108) PDF file, about 7mbmegabytes DEM Memorandum: Notice of Stillwater Dam Permit Requirement (June 2023) PDF file, less than 1mbmegabytes DEM Memorandum: Stillwater Dam Historic Use (July 2022) PDF file, less than 1mbmegabytes Waterman Lake Dam (111) in Smithfield The Dam has the capacity to store 2,430 normal storage acre-feet. OBJECTID 95 STATE_ID 111 DAM_NAME WATERMAN LAKE AKA NID RI03103 GIS_Lon -71.58 LONGITUDE -71.58 GIS_Lat 41.88 LATITUDE 41.88 COUNTY PROVIDENCE Muni GLOCESTER / SMITHFIELD Waterbody STILLWATER RIVER YrBuilt 1,837 Purpose R DW ConsType EARTH,MASONRY Length 4,630 Ac_Ft 2,430 HAZARD HIGH Dam Visual Inspection Report: Waterman Lake Dam (111) PDF file, about 6mbmegabytes Hazard Potential Assessment: Waterman Lake Dam (111_is) PDF file, about 6mbmegabytes DEM Letter: Notice of Waterman Dam Permit Requirement (June 2023) PDF file, less than 1mbmegabytes DEM Letter: Waterman Dam Historic Use (July 2022) PDF file, less than 1mbmegabytes Resources Rules and Regulations for Dam Operation Permits (250-RICR-130-10-1) R.I. Gen. Laws § 46-19.1-1 RIDEM Dam Safety Program RI Dam Safety Interactive Map ASDSO Dam Owner Academy ASDSO Resources for Dam Owners and Operators Report an Environmental Complaint DEM's Office of Compliance and Inspection (OC&I) investigates complaints and suspected violations of environmental laws and regulations and performs compliance monitoring of regulated activities. Compliance with environmental laws, rules, regulations, permits and licenses is enforced through both informal and formal enforcement actions. Note: Complaints are public records and information you forward to OC&I will be available for public review UNLESS you advise us that you wish to remain anonymous. Report via Email After hours emergency: 401-222-3070
DEM Memorandum: Notice of Olney Pond Dam Permit Requirement (June 2023) PDF file, less than 1mbmegabytes
DEM Letter: Notice of Pascoag Reservoir Dam Permit Requirement (June 2023) PDF file, less than 1mbmegabytes
DEM Letter: Notice of Slatersville Dam Permit Requirement (June 2023) PDF file, less than 1mbmegabytes
DEM Memorandum: Notice of Stillwater Dam Permit Requirement (June 2023) PDF file, less than 1mbmegabytes