§ 50-23. General.

A. 

Alteration or relocation of watercourse.

(1) 

No encroachment, alteration, or improvement of any kind shall be made to any watercourse until all adjacent municipalities which may be affected by such action have been notified by the municipality, and until all required permits or approvals have been first obtained from the Department of Environmental Protection regional office.

(2) 

No encroachment, alteration, or improvement of any kind shall be made to any watercourse unless it can be shown that the activity will not reduce or impede the flood-carrying capacity of the watercourse in any way.

(3) 

In addition, the FEMA and Pennsylvania Department of Community and Economic Development shall be notified prior to any alteration or relocation of any watercourse.

B. 

Technical or scientific data shall be submitted by the applicant to FEMA for a letter of map revision (LOMR) within six months of the completion of any new construction, development, or other activity resulting in changes in the BFE. The situations when a LOMR or a conditional letter of map revision (CLMOR) are required are:

(1) 

Any development occurring in Zones A1-30 and AE without a floodway, which will cause a rise of more than one foot in the base flood elevation; or

(2) 

Alterations or relocation of a stream (including but not limited to installing culverts and bridges).

C. 

Any new construction, development, uses or activities allowed within any identified floodplain area shall be undertaken in strict compliance with the provisions contained in this chapter and any other applicable codes, ordinances and regulations.