[Amended 5-22-2023]
9.1.1
Purposes. The purposes of the Floodplain District are to:
A.
Ensure public safety through reducing the threats to life and personal injury;
B.
Eliminate new hazards to emergency response officials;
C.
Prevent the occurrence of public emergencies resulting from water quality, contamination, and pollution due to flooding;
D.
Avoid the loss of utility services which if damaged by flooding would disrupt or shut down the utility network and impact regions of the community beyond the site of flooding;
E.
Eliminate costs associated with the response and cleanup of flooding conditions;
F.
Reduce damage to public and private property resulting from flooding waters.
9.1.2
Overlay District Defined. The Floodplain District is herein established as an overlay district. The district includes all special flood hazard areas within the Town of Southbridge designated as Zone A, AE, AH, AO, or A99 on the Worcester County Flood Insurance Rate Map (FIRM) dated June 21, 2023, as amended, issued by the Federal Emergency Management Agency (FEMA) for the administration of the National Flood Insurance Program. The exact boundaries of the district shall be defined by the 1%-chance base flood elevations shown on the FIRM and further defined by the Worcester County Flood Insurance Study (FIS) report dated June 21, 2023, as amended. The FIRM and FIS report are incorporated herein by reference and are on file with the Town Clerk, Planning Board, Building Official, Conservation Commission and Board of Health.
9.1.3
Base Flood Elevation and Floodway Data.
A.
In Zones A, A1-30, and AE, along watercourses that have not had a regulatory floodway designated, the best available federal, state, local, or other floodway data shall be used to prohibit encroachments in floodways which would result in any increase in flood levels within the community during the occurrence of the base flood discharge.
B.
In Zones A1-30 and AE, along watercourses that have a regulatory floodway designated on the Town's FIRM, encroachments are prohibited, including fill, new construction, substantial improvements, and other development within the adopted regulatory floodway unless it has been demonstrated through hydrologic and hydraulic analyses performed in accordance with standard engineering practice that the proposed encroachment would not result in any increase in flood levels within the community during the occurrence of the base flood discharge.
C.
Base Flo0d Elevation Data. Base flood elevation data is required for subdivision proposals or other developments greater than 50 lots or five acres, whichever is the lesser, within unnumbered A zones.
9.1.4
Designation of Community Floodplain Administrator. The Town of Southbridge hereby designates the position of Director of Public Works to be the official Floodplain Administrator for the Town.
9.1.5
Notification of Watercourse Alteration or Relocations in Riverine Areas/Requirement to Submit New Technical Data. If the Town acquires data that changes the base flood elevation in the FEMA mapped special flood hazard areas, the Town will, within six months, notify FEMA of these changes by submitting the technical or scientific data that supports the change(s.) In a riverine situation, the Floodplain Administrator shall notify the following of any alteration or relocation of a watercourse. Notification shall be submitted to:
9.1.6
Development Regulations.
A.
Special Permits. In the floodplain, no structure or building shall be erected, constructed, substantially improved, or otherwise created or moved; no earth or other materials dumped, filled, or otherwise created or moved; no earth or other materials dumped, filled, excavated, or transferred, including new construction or changes to existing buildings, placement of manufactured homes, placement of agricultural facilities, fences, sheds, storage facilities or drilling, mining, paving and any other development that might increase flooding or adversely impact flood risks to other properties unless a special permit is granted by the Planning Board. A special permit may be issued under this Section 9.1 (subject to other applicable provisions of this By-law) if the application complies with all of the following provisions:
1.
The proposed use shall comply in all respects with the provisions of the underlying zoning district.
2.
Within 10 days of receipt of the application, the Planning Board shall transmit one copy of the development plan to the Conservation Commission, Planning Board, Board of Health, DPW Director or designee and Zoning Enforcement Officer. Final action shall not be taken until reports have been received from the above boards or until 35 days have elapsed.
3.
All encroachments, including fill, new construction, substantial improvements to existing structures, and other development are prohibited unless certification by a registered professional engineer is provided by the applicant demonstrating that such encroachment shall not result in any increase in flood levels during the occurrence of the 100-year flood.
4.
The Planning Board may specify such additional requirements and conditions it finds necessary to protect the health, safety and welfare of the public and the occupants of the proposed use.
5.
The Town's permit review process includes the requirement that the proponent obtain all local, state and federal permits that will be necessary in order to carry out the proposed development in the Floodplain Overlay District. The proponent must acquire all necessary permits, and must demonstrate that all necessary permits have been acquired.
6.
In A Zones, in the absence of FEMA BFE data and floodway data, the Building Department will obtain, review and reasonably utilize base flood elevation and floodway data available from a federal, state, or other source as criteria for requiring new construction, substantial improvements, or other development in Zone A and as the basis for elevating residential structures to or above base flood level, for floodproofing or elevating nonresidential structures to or above base flood level, and for prohibiting encroachments in floodways.
7.
Within Zones AO and AH on the FIRM, adequate drainage paths must be provided around structures on slopes, to guide floodwaters around and away from proposed structures.
8.
In A1-30, AH, and AE Zones, all recreational vehicles to be placed on a site must be elevated and anchored in accordance with the zone's regulations for foundation and elevation requirements or be on the site for less than 180 consecutive days or be fully licensed and highway ready.
B.
All development in the Floodplain District, including structural and nonstructural activities, whether permitted by right or by special permit, must comply with G.L. c. 131, §40, and the following:
2.
310 CMR (Commonwealth of Massachusetts Regulations), Department of Environmental Protection, wetlands protection regulations (currently Section 10.00);
3.
Minimum requirements for the subsurface disposal of sanitary sewage, DEP (currently 310 CMR 15, Title 5).
A variance from these floodplain By-laws must meet the requirements set out by state law, and may only be granted if: 1) good and sufficient cause and exceptional nonfinancial hardship exist; 2) the variance will not result in additional threats to public safety, extraordinary public expense, or fraud or victimization of the public; and 3) the variance is the minimum action necessary to afford relief. |
Variances to Building Code Floodplain Standards: |
If the state issues variances to the flood-resistant standards as found in the State Building Code, the community will use this text for local adoption: The Town will request from the State Building Code Appeals Board a written and/or audible copy of the portion of the hearing related to the variance, and will maintain this record in the community's files. |
The Town shall also issue a letter to the property owner regarding potential impacts to the annual premiums for the flood insurance policy covering that property, in writing over the signature of a community official that (i) the issuance of a variance to construct a structure below the base flood level will result in increased premium rates for flood insurance up to amounts as high as $25 for $100. of insurance coverage and (ii) such construction below the base flood level increases risks to life and property. |
Such notification shall be maintained with the record of all variance actions for the referenced development in the Floodplain Overlay District. |
9.1.7
Abrogation. The floodplain management regulations found in this Floodplain Overlay District section shall take precedence over any less restrictive conflicting local laws, ordinances or codes.
9.1.8
Disclaimer of Liability. The degree of flood protection required by this By-law is considered reasonable but does not imply total flood protection.
9.1.9
Severability. If any section, provision or portion of this By-law is deemed to be unconstitutional or invalid by a court, the remainder of the By-law shall be effective.