N.Y. Comp. Codes R. & Regs. tit. 6, § 608.11 – Mean high water elevations.

(a) Mean high water elevations are established for the waters listed in the following table.

LIST OF MEAN HIGH WATER ELEVATIONS
(Expressed in Feet Above Mean Sea Level)
Waters Index Number	Watershed Drainage Basin Waterbody	U.S.G.S. Gaging Station Number	Mean High Water Elevation
ALLEGHENY RIVER DRAINAGE BASIN
P122	Chautauqua Lake	03013946	1309.40^a
BLACK RIVER DRAINAGE BASIN
O-19-40-P 493	Stillwater Reservoir	04256500	1679.30^c
O-19-81-18-P 782a	First Lake	04253400	1707.26^a
O-19-81-18-P 782d-10-P	Sixth Lake	04253300	1786.10^a
CHEMUNG RIVER DRAINAGE BASIN
PA 3-57-5	Arkport Reservoir	01521000	1304.00^c
PA 3-57-5-47-P 29c	Almond Lake	01523000	1300.00^c
PA 3-58-15-P 47	Waneta and Lamoka Lakes		1099.00^c
DELAWARE RIVER DRAINAGE BASIN
D-1-P 58b	Neversink Reservoir	01435900	1440.00^c
D-10-P 79a	Rio Reservoir		820.00^c
D-10-12, P 96a	Mongaup Falls Reservoir		940.00^c
D-10-15-P 100	Cliff Lake	01433200	1072.00^c
D-10-15-P 100a	Toronto Reservoir	01433100	1220.00^c
D-10-P 108a	Swinging Bridge Reservoir	01433000	1071.20^c
D-70-P 358a	Pepacton Reservoir	01416900	1280.00^c
GENESEE RIVER DRAINAGE BASIN
Ont. 117-27-34-11-P 43	Canadice Lake	04228950	1097.20^a
Ont. 117-27-P 57	Honeoye Lake	04228845	804.50^a
Ont. 117-40 P 67	Conesus Lake	04227980	819.40^a
Ont. 117-P 110a	Mount Morris Dam Reservoir	04224000	760.00^c
Ont. 117-136-P 146	Rushford Lake	04221990	1440.00^c
LAKE CHAMPLAIN DRAINAGE BASIN
C	Lake Champlain	04294500	99.80^a
C	Richelieu River	04295000	99.80^a
C-25-26-35-5-P 254	Lake Placid	04273900	1858.94^a
C-101-P	Lake George	04278000	320.20^d
LAKE ERIE-NIAGARA RIVER DRAINAGE BASIN
E	Lake Erie		573.40^b
LAKE ONTARIO DRAINAGE BASIN
Ont. O	Lake Ontario		247.30^b
LOWER HUDSON RIVER DRAINAGE BASIN
H-139-14-P 815a	Roundout Reservoir	01366400	840.00^c
H-171-P 848	Ashokan Reservoir West	01363400	591.18^a
H-171-P 848	Ashokan Reservoir East	01363400	587.10^c
MOHAWK RIVER DRAINAGE BASIN
H-240-82 P 630 a, b	Blenheim-Gilboa Reservoir		900.00^c
H-240-82-P 638a	Schoharie Reservoir	01350100	1130.70^a
H-240-180-P 799	Hinckley Reservoir	01343900	1226.41^c
H-240-P 1059	Delta Reservoir	01335900	551.50^a
OSWEGO RIVER DRAINAGE BASIN
P 154-4	Onondaga Reservoir	04238500	504.50^c
Ont. 66-12-29-P 193	Skaneateles Lake	04236000	863.77^a
Ont. 66-12-43-P 212	Owasco Lake	04235396	713.90^a
Ont. 66-12-52-P 286	Canadaigua Lake	04234500	689.40^a
Ont. 66-12-P 296	Cayuga Lake	04233500	383.50^a
Ont. 66-12-P 369	Seneca Lake	04232400	445.90^a
Ont. 66-12-P 369-115-P 388	Keuka Lake	04232450	715.30^a
ST. LAWRENCE RIVER
SL-1	Carry Falls Reservoir	04266700	1386.00^c
SL-25-P 309	Cranberry Lake	04260990	1486.43^a
SUSQUEHANNA RIVER DRAINAGE BASIN
SR-44-14-27-P 35	Whitney Point Lake	01511000	1010.00^c
SR-155-P 262	East Sidney Lake	01499500	1203.00^c
SR-204-P 392	Canadarago Lake	01496450	1282.03^a
UPPER HUDSON RIVER DRAINAGE BASIN
H-369-P 127	Great Sacandaga Lake	01321000	771.00^c
H-461-P 597	Indian Lake	01314500	1651.74^a

^a1929 National Geodetic Vertical Datum

^bCorps of Engineers determination based on 1985 International Great Lakes Datum

^cSpillway or Flashboard Crest Elevation

^d1912 National Geodetic Vertical Datum