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Part 936: Connecticut Water Supply Drainage Basin Within Westchester County

(Statutory authority: Environmental Conservation Law, § 17-0301)

Contents:

Sec.

§936.1 Adopting Order

Pursuant to article 17 of the Environmental Conservation Law, after proper study and following public hearings held on due notice, the Department of Environmental Conservation hereby adopts and assigns the following classifications and standards of quality and purity to all surface waters within the designated drainage basins of Connecticut Water Supply within Westchester County, as hereinafter described.

§936.2 Definitions

The several terms, words or phrases hereinafter mentioned shall be construed as follows:

(a) Item No. In Table I an item number is assigned consecutively to each specifically designated waters or portion thereof.

(b) Waters index number as appearing in Table I shall mean that number or abbreviation which has been assigned to any specifically designated waters or portion thereof for the purpose of identification.

(1) The numbering or index system used to identify specific waters of New York State was adapted from that used by the New York State Conservation Department in its biological survey series of reports on watersheds of the State. The primary waters of a drainage area, such as a river, large lake, bay or sound is usually referred to by name or an abbreviation. Tributaries of primary river waters are consecutively numbered progressing upstream from the mouth. Tributaries of primary lake, bay or sound waters are consecutively numbered in a clockwise order from a defined point, usually the outlet of the primary waters. Subtributaries are numbered as encountered along the tributary proceeding from its mouth to the source, and in like manner all of its other stream courses are so numbered. Ponds and lakes are numbered in the order they are encountered within the system. Tributaries of such lakes and ponds are numbered consecutively as they enter, progressing clockwise around the lake or pond from its outlet or mouth. The numbers assigned to such lakes and ponds are prefixed by the letter P. When isolated lakes and ponds are referenced by a waters index number, it is merely for convenience of their identification and location within a subdrainage basin, and it is not necessarily indicative of their being tributary to any waters to which no surface connection is shown on the reference maps.

(2) This system was applied to the waters under consideration by the New York State Conservation Department in its Biological Survey of the Lower Hudson Watershed in 1936 and has been closely followed in connection with the numerical identification of the waters with the following exceptions: some of the stream numbers do not run consecutively due to the omission of streams originally shown on the older maps employed by the Conservation Department at the time of its 1936 survey but not shown on later editions of maps produced herein. Conversely, streams, lakes and ponds not shown on the older maps but appearing on the newer maps are designated by suffix letters a, b, c, etc.

(3) Streams that enter the State of Connecticut are identified by water index waters prefixed by the abbreviation "Conn."

(4) The following table will illustrate how the designated waters may be identified through the use of the waters index system:

Waters Index Number Name of Waters Explanation
Conn. 4 Mianus River The fourth stream crossing the New York-Connecticut boundary line proceeding northward along the boundary.
Conn. 4-2 Tributary of Mianus River The second tributary entering the Mianus River above the mouth.
Conn. 6-P 1109 Trinity Lake The 1109th pond, lake or reservoir encountered in the biological survey area of the Lower Hudson River watershed.

(c) The abbreviations trib., tribs., subtrib. and subtribs., indicating tributary, tributaries, subtributary and subtributaries, respectively, shall mean any stream, pond or other body of surface water which flows into any other stream, pond or other body of surface water; where no tributary, tributaries, subtributary or subtributaries are mentioned, the specifically designated waters shall include only the stream, pond or other body of water referenced by such waters index number; where a tributary, tributaries, subtributary or subtributaries are mentioned after the waters index number, the specifically designated waters shall include the stream, pond or other body of water referenced by such waters index number and all tributaries and subtributaries thereof, which are shown on the reference maps, excluding numbered ponds, unless exceptions are expressly stated.

(d) Name as appearing in Table I shall mean the name by which the specifically designated waters are known and which may appear on the reference maps. In cases of specifically designated waters which have no name, the named waters to which the unnamed waters are tributary are identified as far as possible.

(e) Description as appearing in Table I contains designations of segments or sections of waters under consideration to which a particular assignment of a class and standards shall apply. Also included in this column is any useful information pertinent to the classification or standards.

(f) Map Ref. No. as appearing in Table I, means map reference number and indicates one or more of the following numbered maps reproduced herein completely or in part, on which maps the specifically designated waters and their index numbers are shown.

(1) The following maps were produced from original maps which may be procured through the Washington Distribution Section, Geological Survey, Silver Spring, Maryland:

Map Ref. No. Name of Quadrangle Edition Published By
P-25se Peach Lake 1955 U.S. Geological Survey
Q-25nw Mount Kisco 1955 U.S. Geological Survey
Q-25ne Pound Ridge 1960 U.S. Geological Survey
Q-26nw Norwalk North 1951 U.S. Geological Survey
Q-25sw Glenville 1951 U.S. Geological Survey

(g) Class, as appearing in Table I as the letters A, B, C or AA-Special, opposite each specifically designated waters, shall mean class A, B, C or AA-Special, as the case may be, as set forth in Parts 701 and 702, supra.

(h) Standards, as appearing in Table I as the letters A, B, C or AA-Special opposite each specifically designated waters, shall mean the quality standards established for class A, B, C or AA-Special, as the case may be, as set forth in Parts 701 and 702, supra.

§936.3 Special Conditions

All streams, ponds or other bodies of water which appear as lines to indicate natural waters on the reference maps herein and which are not specifically designated in Table I, or all streams or other bodies of water which are not shown on the reference maps herein, shall be assigned to class AA-Special, as set forth in Part 702, supra.

§936.4 Assigned Classifications and Standards of Quality and Purity

The classifications and standards of quality and purity assigned to the surface waters specifically designated and described herein are set forth in Table I, subject to the definitions and conditions stated above.

§936.5 Table I

Table I
Classifications and Standards of Quality and Purity Assigned to Fresh Surface Waters Within the Connecticut Water Supply Drainage Basin Within Westchester County, New York
Item No. Waters Index Number Name Description Map Ref. No. Class Standards
1 Conn. 1 and tribs. Trib. of East Branch Byram River Portion within New York State. Q-25sw Q-25nw B B
2 Conn. 2 including P 1106v and trib. portion Converse Pond Brook Portions within New York State. Converse Lake (P 1106v). Q-25nw AA-SPECIAL AA-SPECIAL
3 Conn. 3 and trib. portion Piping Brook Portion within New York State. Q-25nw AA-SPECIAL AA-SPECIAL
4 Conn. 4-P 1106d portion Mianus Reservoir From New York-Connecticut state line to trib. 1d. Portion within New York State. Q-25ne AA-SPECIAL AA-SPECIAL
5 Conn. 4-P 1106d-1a including P 1106e, 1b, 1c including P 1106f, P 1106g, 1 and tribs. including P 1106h Tribs. of Mianus Reservoir Robin Hood Lake (P 1106g). The Lake in the Ledges (P 1106h). Q-25ne Q-25nw AA-SPECIAL AA-SPECIAL
6 Conn. 4 portion Mianus River From trib. 1d to P 1108c. Q-25ne Q-25nw AA-SPECIAL AA-SPECIAL
7 Highland Lake (P 1106k). Tribs. of Mianus River Conn. 4-1d and tribs. including P 1106i, P 1106j, P 1106k, P 1106m, 1e, 1f including P 1106n, P 1106o, including P 1106p, 1h including P 1106q Q-25ne AA-SPECIAL AA-SPECIAL
8 Conn. 4-2 Trib. of Mianus River Q-25ne AA-SPECIAL AA-SPECIAL
9 Conn. 4-2-P 1106a, P 1106s Twin Lakes Q-25ne AA-SPECIAL AA-SPECIAL
10 Conn. 4-2-1, 1a including P 1106r Subtribs. of Mianus River Q-25ne AA-SPECIAL AA-SPECIAL
11 Conn. 4-3 and trib., P 1106b Tribs. of Mianus River Q-25ne AA-SPECIAL AA-SPECIAL
12 Conn. 4-4, 6, 7, including P 1106t, P 1106u, 8 including P 1107, P 1107d, P 11O7e, 9 including P 1107c, 10 including P 1107f, 11 and tribs. including P 1107g, P 1107h Q-25nw AA-SPECIAL AA-SPECIAL
13 Conn. 4-6-P 1106c and trib. Subtrib. of Mianus River Q-25nw C C
14 Conn. 4012 and tribs. including P 1107a, P 1107b, P 1108, P 1108a Trib. of Mianus River Bechtel Lake (P 1107b). Q-25nw AA-SPECIAL AA-SPECIAL
15 Conn. 4-12a including P 1108e, 13 and tribs. including P 1108f, P 1108b, P 1108g, P 1108h, P 1108i, 14, 15 including P 1108k, 16, 16a including P 1108m, 17 and tribs, including P 1108o, P 1108p, P 1108q, P 1108c, P 1108n Tribs. of Mianus River Cobamong Pond (P 1108k). Long Pond (P 1108n). Windmill Lake (P 1108o). North Lake (P 1108q). Q-25nw AA-SPECIAL AA-SPECIAL
16 Conn. 5 and tribs. including P 1108r, P 1108s East Branch Mianus River Q-25ne AA-SPECIAL AA-SPECIAL
17 Conn. 6 Mill River From New York-Connecticut state line to P 1109 (Trinity Lake). Stream empties into Laurel Reservoir in Connecticut. Q-25ne AA-SPECIAL AA-SPECIAL
18 Conn. 6-1 and tribs. including P 1108t, P 1108u, P 1108v, 2a, 2 and tribs. including P 1108w, P 1108x, 3 and tribs. including P 1108y, P 1108z, P 1108d, 3a Tribs. of Mill River Mallard Lake (P 1108u). Q-25ne AA-SPECIAL AA-SPECIAL
19 Conn. 6-4 Mill River Q-25ne P-25se AA-SPECIAL AA-SPECIAL
20 Conn. 6-4-1, 2 and tribs. including P 1109a, P 1109b Tribs. of Mill River Q-25ne P-25se AA-SPECIAL AA-SPECIAL
21 Conn. 6-P 1109 Trinity Lake Q-25ne AA-SPECIAL AA-SPECIAL
22 Conn. 7 and tribs. including P 1109c Trib. of Laurel Reservoir Q-25ne AA-SPECIAL AA-SPECIAL
23 Conn. 8 and tribs. Trib. of Laurel Reservoir Q-25ne AA-SPECIAL AA-SPECIAL
24 Conn. 9-P 1110 portion Siscowit Reservoir Portion within New York State. Q-25ne AA-SPECIAL AA-SPECIAL
25 Conn. 9-P 1110-1 and tribs. including P 1110b, P 1110c, P 1110d, P 1110e, 2 and trib. Tribs. of Siscowit Reservoir Q-25ne AA-SPECIAL AA-SPECIAL
26 Conn. 9-P 1110-3 and tribs. Trib. of Siscowit Reservoir Q-25ne A A
27 Conn. 9a-P 1110f Trib. of Fivemile River Q-25ne AA-SPECIAL AA-SPECIAL
28 Conn. 10 portion West Branch Silvermine River From P 1110g (John Demilne Lake) to P 1111 (Scotts Reservoir). Q-26nw Q-25ne AA-SPECIAL AA-SPECIAL
29 Conn. 10-P 1110g portion John DeMilne Lake Portion within New York State. Q-26nw AA-SPECIAL AA-SPECIAL
30 Conn. 10-P 1110g-1 and tribs. Trib. of John DeMilne Lake Q-26nw Q-25ne AA-SPECIAL AA-SPECIAL
31 Conn. 10-P 1110a and tribs. Browns Reservoir Q-26nw Q-25ne AA-SPECIAL AA-SPECIAL
32 Conn. 10-P 1111 and tribs. including P 1111a, P 1111b, P 1111c, P 1111d, P 1111e Scotts Reservoir Q-25ne AA-SPECIAL AA-SPECIAL

§936.6 Quadrangle Maps

TABULAR OR GRAPHIC MATERIAL SET FORTH AT THIS POINT IS NOT DISPLAYABLE