1. (b) Waters index number as appearing in table I shall mean that number assigned to any designated waters for the purpose of identification.

   1. (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 the watersheds of the State. The primary waters of a drainage basin, a stream or large lake, is referred to by name or abbreviation. Ponds and lakes are numbered consecutively as they are encountered, such number being preceded by the letter P. This system also involves the consecutive numbering of tributaries as they enter a stream, progressing upstream from the mouth. Tributaries of lakes or ponds are numbered consecutively as they enter, progressing clockwise around the lake or pond from its outlet or mouth. Isolated lakes and ponds are referenced by a waters index number 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 St. Lawrence River drainage basin in 1930. This report covered all streams in the basin with the exception of the Raquette River which was covered by a subsequent Conservation Department report in 1933, and the Oswegatchie River was covered by a report in 1931.
   3. (3) The 1930 report 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 the older maps employed by the Conservation Department at the time of its 1930 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.

   4. (4) The system as applied to the identification of waters in the St. Lawrence River drainage basin may be illustrated as follows:

      1. (i) For purposes of convenience and report presentation of the recommended classification tables, the tables are divided into three sections. The designations and descriptions of these three sections are:

         1. (a) St. Lawrence River—main stem,
         2. (b) SL streams—streams tributary to United States section of the St. Lawrence River, and the
         3. (c) SLC streams—streams tributary to Canadian section of St. Lawrence River. The SLC streams traverse the United States-Canadian border before discharging into the St. Lawrence River within Canada.

   5. (5) The following is a specific example of the waters index system:

      Waters index number	Name of waters	Explanation
      SL	St. Lawrence River	The St. Lawrence River, a primary waterway.
      SLC-32	St. Regis River	The 32nd tributary of the St. Lawrence River numbering from the mouth upstream and numbering only those tributaries that drain portions of this involved drainage basin and cross the United States-Canadian border before discharging into the St. Lawrence River within Canada.
      SLC-32-40	Dexter Lake Outlet	The 40th tributary of the St. Regis River numbering from the Canadian border upstream.
      SLC-32-40-6	Unnamed stream	The 6th tributary of tributary 40 of the St. Regis River.
      -P164	Dexter Lake	Pond number 164 in the St. Lawrence drainage basin.
      SLC-32-40-6 -164-2	Unnamed stream	The second tributary of Dexter Lake numbering clockwise from the outlet.
      SLC-32-40-P164 -6-2(0.2)	A specific point	This identifies a point located on trib. 2 of Dexter Lake 0.2 of a mile upstream measured along the stream bed.

2. (c) The abbreviations trib and tribs indicating tributary and tributaries, and the terms subtributary and subtributaries 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.

3. (d) Name as appearing in table I shall mean the name by which the specifically designated waters are known and which name 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) Comments.

   The column headed "Comments" 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 classifications or standards.

4. (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 within the topographical limit line of the described drainage basin.

   1. (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.	Quadrangle name	Publication date
      20	Barnhard Island	1942
      A-18se	Sparrowhawk Point*	1942
      A-18sw	Red Mills*	1942
      A-19nw	Murphy Island	1942
      A-19ne	Louisville*	1942
      A-19se	Chase Mills	1942
      A-19sw	Waddington*	1942
      A-20nw	Massena	1942
      A-20ne	Raquette River*	1942
      A-20se	Brasher Falls*	1942
      A-20sw	Norfolk	1942
      A-21	Moira	1915
      A-22	Malone	1915
      A-23	Chateaugay	1913
      A-24	Churubusco	1912
      A-25	Mooers	1956
      A-17ne	Ogdensburg West*	1942
      B-17se	Edwardsville*	1942
      B-17sw	Morristown*	1942
      B-18nw	Ogdensburg East*	1942
      B-18ne	Lisbon*	1942
      B-18se	Resselaer Falls*	1942
      B-18sw	Heuvelton*	1942
      B-19	Canton	1910
      B-20nw	Potsdam	1943
      B-20ne	Parishville	1943
      B-20se	Long Bow*	1943
      B-20sw	Colton	1943
      B-21	Nicholville	1919
      B-22	Santa Clara	1921
      B-23	Loon Lake	1906
      B-24	Lyon Mountain	1911
      C-15se	Thousand Island Park	1958
      C-15sw	Grindstone*	1942
      C-16ne	Chippewa Bay	1958
      C-16se	Redwood	1958
      C-16sw	Alexandria Bay	1958
      C-17nw	Hammond	1949
      C-17ne	Pope Mills	1949
      C-17se	Natural Dam	1949
      C-17sw	Muskalonge Lake	1949
      C-18	Gouveneur	1956
      C-19	Russell	1915
      C-20	Stark	1921
      C-21	Childwold	1920
      C-22	St. Regis	1955
      C-23	Saranac Lake	1955
      D-14ne	Cape Vincent North*	1942
      D-14se	Cape Vincent South	1958
      D-15nw	Sawmill Bay	1942
      D-15ne	Clayton	1958
      D-16nw	Lafargeville	1958
      D-16ne	Theresa	1958
      D-16se	Black River	1958
      D-17nw	Philadelphia	1949
      D-17ne	Antwerp	1949
      D-17se	North Wilna	1949
      D-17sw	Deferiet	1949
      D-13nw	Lake Bonaparte	1951
      D-18ne	Harrisville	1951
      D-18se	Remington Corners	1951
      D-18sw	Natural Bridge	1951
      D-19	Oswegatchie	1916
      D-20	Cranberry Lake	1919
      D-21	Tupper Lake	1954
      D-22	Long Lake	1955
      D-23	Santanoni	1953
      E17ne	Carthage	1943
      E-18	Lowville	1911
      E-19	Number Four	1957
      E-20	Big Moose	1954
      E-21	Raquette Lake	1954
      E-22	Blue Mountain	1954
      F-21	West Canada Lakes	1954

      Note:

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

5. (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.
6. (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 quality standards 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 class designation shall mean that the designated waters are trout waters and that the dissolved oxygen specification for trout waters shall apply thereto.

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.