1. (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 portions thereof for the purpose of identification.

   1. (1) The numbering or index system used to identity 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 basin, such as rivers or large lakes are usually referred to by name or an abbreviation. Tributaries of primary waters are consecutively numbered progressing upstream from the mouth. Ponds and lakes are numbered consecutively as they are encountered, such numbers being preceded by the letter P. Tributaries of such lakes and ponds are numbered consecutively as they enter, progressing clockwise around the lake or pond from its outlet or mouth. 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. (2) This system was applied to the basin under consideration by the Conservation Department in its biological survey of the Lower Hudson watershed in 1936 and has been closely followed in connection with the 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 older maps employed by the Conservation Department at the time of its 1936 survey, but not shown on newer maps reproduced herein. Conversely, a few streams not shown on the older maps but appearing on the newer maps are designated by the letters a, b, c, etc.

   3. (3) The system as applied to the identification of waters in the Lower Hudson River drainage basin may be illustrated as follows:

      Water index number	Name	Explanation
      H	Hudson River	Primary waters within New York State extending upstream from The Battery, New York City.
      H-204	Stockport Creek	The 204th tributary entering the Hudson River in New York State numbering upstream from The Battery.
      H-204-2	Kinderhook Creek	The 2nd tributary entering Stockport Creek numbering upstream from the mouth.
      H-204-2-36	Black River	The 36th tributary entering Kinderhook Creek numbering upstream from the mouth.
      H-204-2-36-4	Trib. of Black River	The 4th tributary entering Black River numbered upstream from the mouth.
      H-204-2-36-4-P 81	Spring Lake	The 81st pond, lake or reservoir encountered in the biological survey area of the Lower Hudson River watershed, and specifically located in the drainage basin of the Black River.

2. (c) The abbreviations trib., tribs., subtrib. and subtribs indicating tributary, tributaries, subtributary and subtributaries, respectively, shall mean any stream, lake, pond or other body of surface water which fiows into any other stream, lake, or pond or other body of surface water. Where no tributaries or subtributaries are mentioned, the specifically designated waters shall include only the stream, lake, pond or other body of surface water referenced by such waters index number; where tributaries or subtributaries are mentioned after the waters index number, the specifically designated waters shall include the stream, lake, pond or other body of surface water referenced by such waters index number and all tributaries and subtributaries thereof, which are shown on the reference maps, unless exceptions are expressly stated.
3. (d) Name as appearing in table I shall mean the name, if any, by which the specifically designated waters are generally known and which may appear on the reference maps. In cases of specifically designated waters which have no name, the named tributary to which the unnamed waters are tributary is indicated as far as possible.
4. (e) Description as appearing in table I shall mean a brief indication as to the location of the specifically designated waters. Entries may include designations of sections of waters to which a particular assignment of a class and standards shall apply. Entries may also include any useful information pertinent to the classification and standards.

5. (f) Map Ref. No. as appearing in table I shall mean map reference number and indicates one or more of the following numbered maps reproduced herein completely, or in part, on which the specifically designated waters and their index numbers are shown. The following maps were produced from original maps. The U.S. Geological Survey maps may be procured through the Washington Distribution Section, Geological Survey. The N.Y.S.D.O.T. maps may be procured through the Map Information Unit, New York State Department of Transportation.

   Map Ref. No.	Name of quadrangle	Published by	Edition
   J-23sw	Duanesburg	U.S. Geological Survey	1954
   J-23se	Rotterdam Junction	U.S. Geological Survey	1955
   J-24sw	Schenectady	U.S. Geological Survey	1954
   J-24se	Niskayana	U.S. Geological Survey	1954
   J-25sw	Troy North	N.Y.S.D.O.T.	1983
   J-25se	Tomhannock	U.S. Geological Survey	1954
   J-26sw	Grafton	U.S. Geological Survey	1943-1954
   K-22se	Middleburg*	U.S. Geological Survey	1943
   K-23nw	Gallupville	N.Y.S.D.O.T.	1983
   K-23ne	Altamont	N.Y.S.D.O.T.	1983
   K-23sw	Rensselaerville*	U.S. Geological Survey	1944
   K-23se	Westerlo*	U.S. Geological Survey	1944
   K-24nw	Voorheesville	N.Y.S.D.O.T.	1983
   K-24ne	Albany	N.Y.S.D.O.T.	1983
   K-24sw	Clarksville	N.Y.S.D.O.T.	1983
   K-24se	Delmar	N.Y.S.D.O.T.	1983
   K-25nw	Troy South	N.Y.S.D.O.T.	1983
   K-25ne	Averill Park	N.Y.S.D.O.T.	1974-2nd ed.
   K-25sw	East Greenbush	N.Y.S.D.O.T.	1974-2nd ed.
   K-25se	Nassau	N.Y.S.D.O.T.	1974-2nd ed.
   K-26nw	Taborton	U.S. Geological Survey	1945
   K-26ne	Berlin	U.S. Geological Survey	1944
   K-26sw	Stephentown Center	N.Y.S.D.O.T.	1976-2nd ed.
   K-26se	Hancock	U.S. Geological Survey	1944
   L-22ne	Livingstonville*	U.S. Geological Survey	1943
   L-23nw	Durham*	U.S. Geological Survey	1943
   L-23ne	Greenville*	U.S. Geological Survey	1943
   L-23sw	Hensonville*	U.S. Geological Survey	1943
   L-23se	Freehold	N.Y.S.D.O.T.	1976-2nd ed.
   L-24nw	Alcove	U.S. Geological Survey	1953
   L-24ne	Ravena	N.Y.S.D.O.T.	1983
   L-24sw	Leeds	U.S. Geological Survey	1953
   L-24se	Hudson North	N.Y.S.D.O.T.	1976-2nd ed.
   L-25nw	Kinderhook	N.Y.S.D.O.T.	1976-2nd ed.
   L-25ne	East Chatham	U.S. Geological Survey	1953
   L-25sw	Stottville	N.Y.S.D.O.T.	1976-2nd ed.
   L-25se	Chatham	U.S. Geological Survey	1953
   J-26nw	Canaan	N.Y.S.D.O.T.	1976-2nd ed.
   L-26ne	Pittsfield West	U.S. Geological Survey	1944
   L-26sw	State Line	U.S. Geological Survey	1944
   M-23ne	Kaaterskill*	U.S. Geological Survey	1943
   M-23se	Plattekill*	U.S. Geological Survey	1943
   M-24	Catskill	U.S. Geological Survey	1941
   M-25nw	Claverack	N.Y.S.D.O.T.	1976-2nd ed.
   M-25ne	Hillsdale	N.Y.S.D.O.T.	1976-2nd ed.
   M-25sw	Ancram	N.Y.S.D.O.T.	1976-2nd ed.
   M-25se	Copake	N.Y.S.D.O.T.	1976-2nd ed.
   M-26nw	Egremont	U.S. Geological Survey	1946
   M-26sw	Bashbish Falls	U.S. Geological Survey	1946
   N-24	Rhinebeck	U.S. Geological Survey	1939
   N-25nw	Pine Plains	U.S. Geological Survey	1945
   N-25ne	Millerton	N.Y.S.D.O.T.	1973-2nd ed.

   Note:

   Maps identified by an asterisk are military editions of the Army Map Service issued by the U.S. Geological Survey.

6. (g) Class as appearing in table I, and denoted by the letters AA, A, B, C or D opposite each specifically designated waters, shall mean class AA, A, B, C or D, as the case may be, as set forth in Part 701, supra.
7. (h) Standards as appearing in table I, and denoted by the letters AA, A, B, C or D opposite each specifically designated waters shall mean the standards of quality and purity established for class AA, A, B, C or D, as the case may be, as set forth in Part 701, supra. The symbol (T) appearing after any standard designation shall mean that the designated waters are trout waters and that the dissolved oxygen specification for trout waters shall apply thereto. The symbol (TS) after any standard designation shall mean that the designated waters are suitable for trout spawning and that the dissolved oxygen specification for trout spawning waters shall apply thereto.
8. (i) The term trout as used in this Part means any fish in the following genera: “Coregonus”, “Oncorhynchus”, “Prosopium”, “Salmo”, “Salvelinus” and “Thymallus”.

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

(a) Item no.

In table I an item number is assigned to each specifically designated waters or portions thereof.