Westchester County requires stream and stormwater connection permits. Read the information below and follow the requirements outlined to obtain each specific permit.
Stream Permits
The county requires a stream permit prior to all work, whether it be a repair, an alternation or simple maintenance, on, above or within 100 feet of any county stream channel line.
This permit is required of any firm, person, corporation or improvement district or municipality whose intentions are to construct, repair, maintain or later any structure, drainage, water pip, conduit or other serviceable item.
Applicants are required to submit three original permit forms and three sets of plans indicating purposed impact to the stream channel. Only completed, notarized forms with original signatures will be accepted. Download the permit form.
Mail completed forms to:
Jeff Dean, P.E.
Department of Public Works & Transportation
148 Martine Avenue - Room 500
White Plains, NY 10601
These county streams and areas require an approved permit prior to any construction undertaking as noted above:
| Streams Requiring a Permit Prior | ||||
|---|---|---|---|---|
| Stream Name | Municipality | Stream Begins | Stream Ends | Miles |
| Beaver Swamp Brook | Rye, Harrison | Theodore Fremd Ave. | Boston Post Road | 1.86 |
| Blind Brook | Rye, Rye Brook, Harrison | Anderson Hill Road | Mill Pond | 8.39 |
| Byram River | North Castle | Byram Lake | Wampus Brook | 4.03 |
| Mamaroneck River | Mamaroneck, Harrison | Winfield Avenue | Mamaroneck Harbor | 2.03 |
| Saw Mill River | Greenburgh, Elmsford | Fairview Park Drive | Route 119 | 1.14 |
| Saw Mill River | Yonkers | Gordon Place | Yonkers Avenue | 1.82 |
| Sheldrake River | Mamaroneck | Jefferson Avenue | Lakeside Drive | 1.53 |
| Shrub Oak Brook | Yorktown | Mill Street | Gomer Court | 3.09 |
| Sprain Brook | Greenburgh | Underhill Road | Jackson Avenue | 1.84 |
| Troublesome Brook | Yonkers, Greenburgh | Ardsley Road | Read Avenue | 3.43 |
| Wampus River | North Castle | Cox Avenue | I-684 | 3.05 |
| Total: | 32.20 | |||
Stormwater Connection Permits
The county requires a stormwater connecion permit for all connections (existing and new) and/or non-natural stormwater discharges into/on any county infastructure.
This permit is required of any firm, person, corporation or improvement district or municipality whose intentions are to convey stormwater or other approved discharges into the countys stormwater sewer system.
Applicants are required to submit three original permit forms and three sets of plans indicating purposed impact to the stream channel. Only completed, notarized forms with original signatures will be accepted.
Download the Stormwater Connection Permit
Download the Stormwater Permit Instructions
Mail completed forms to:
Jeff Dean, P.E.
Department of Public Works & Transportation
148 Martine Avenue - Room 500
White Plains, New York 10601