GREAT LAKES ENVIRONMENTAL RESEARCH LABORATORY, NOAA Climate Data Modernization Project National Weather Service Historical Great Lakes Ice Reports for Winters 1899 - 1970 Site No. 105, Approximate Location: 46.25 N. Latitude, 84.00 W. Longitude Site Name St. Marys River on St. Marys River ---------------------------------------------------------------------------------------------------------- Year Mo Da T1 T2 C1 T1C1 T2C1 C2 T1C2 T2C2 C3 T1C3 T2C3 IMAGE Supplemental Information ---------------------------------------------------------------------------------------------------------- 1901 3 5 -1 -1 OW -1 -1 -1 -1 -1 -1 011.TIF BELOW FRYING PAN ISLAND 1901 4 9 -1 -1 IP -1 -1 RT -1 -1 SW -1 -1 016.TIF BELOW NINE MILE POINT 1901 4 11 -1 -1 RT -1 -1 -1 -1 -1 -1 017.TIF ABOVE PIPE ISLAND 1902 3 25 -1 -1 BK -1 -1 -1 -1 -1 -1 022.TIF ABOVE POINT AUX PINS 1902 4 1 -1 -1 OW -1 -1 BV -1 -1 -1 -1 023.TIF ENCAMPMENT 1908 4 7 -1 -1 NC -1 -1 -1 -1 -1 -1 061.TIF ENTIRE RIVER 1909 3 2 -1 -1 OW -1 -1 -1 -1 -1 -1 064.TIF ENTIRE LENGTH 1922 4 4 -1 -1 NC -1 -1 -1 -1 -1 -1 153.TIF LOWER RIVER 1923 3 13 16 -1 -1 -1 -1 -1 -1 -1 156.TIF LOWER RIVER 1923 3 20 -1 -1 SO -1 -1 SC -1 -1 -1 -1 157.TIF 1923 3 27 -1 -1 NC -1 -1 -1 -1 -1 -1 158.TIF 1923 4 3 -1 -1 SO -1 -1 SC -1 -1 -1 -1 159.TIF 1923 4 17 -1 -1 NC -1 -1 -1 -1 -1 -1 161.TIF LOWER RIVER 1923 4 24 24 -1 RT -1 -1 -1 -1 -1 -1 162.TIF 1924 4 1 -1 -1 NC -1 -1 -1 -1 -1 -1 167.TIF LOWER RIVER 1924 4 8 16 19 RT -1 -1 -1 -1 -1 -1 168.TIF LOWER RIVER 1924 4 15 -1 -1 RT -1 -1 NC -1 -1 -1 -1 169.TIF LOWER END 1925 3 31 -1 -1 OW -1 -1 -1 -1 -1 -1 173.TIF CHANNEL TO SIX MILE POINT 1926 3 2 -1 -1 IP -1 -1 -1 -1 -1 -1 176.TIF 1926 3 16 -1 -1 SO -1 -1 -1 -1 -1 -1 178.TIF 1926 3 23 -1 -1 SO -1 -1 NC -1 -1 -1 -1 179.TIF 1926 3 30 -1 -1 SO -1 -1 -1 -1 -1 -1 180.TIF EXCEPT AT SAULT STE. MARIE 1926 4 6 -1 -1 SO -1 -1 -1 -1 -1 -1 181.TIF 1926 4 13 -1 -1 SO -1 -1 -1 -1 -1 -1 182.TIF 1926 4 20 -1 -1 OW -1 -1 -1 -1 -1 -1 183.TIF FOOT OF RAPIDS TO UPPER HAY L. 1927 3 15 -1 -1 DC -1 -1 -1 -1 -1 -1 186.TIF WHERE CURRENT IS STRONG 1927 3 22 -1 -1 RT -1 -1 SW -1 -1 -1 -1 187.TIF 1927 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 187.TIF ENCAMPMENT 1927 3 29 -1 -1 DC -1 -1 -1 -1 -1 -1 188.TIF 1927 3 29 -1 -1 OW -1 -1 -1 -1 -1 -1 188.TIF UP TO PIPE ISLAND 1927 3 29 18 -1 DC -1 -1 -1 -1 -1 -1 188.TIF AT THE "TURN" 1927 4 5 -1 -1 IP -1 -1 -1 -1 -1 -1 189.TIF LOWER RIVER 1928 3 20 -1 -1 SO -1 -1 -1 -1 -1 -1 192.TIF 1928 4 3 -1 -1 SO -1 -1 -1 -1 -1 -1 194.TIF 1929 3 12 -1 -1 SO -1 -1 -1 -1 -1 -1 197.TIF 1929 3 19 -1 -1 RT -1 -1 -1 -1 -1 -1 198.TIF 1929 3 26 -1 -1 DC -1 -1 -1 -1 -1 -1 199.TIF 1929 4 9 -1 -1 RT -1 -1 -1 -1 -1 -1 201.TIF 1930 3 4 -1 -1 SO -1 -1 -1 -1 -1 -1 202.TIF TO DETOUR 1930 3 25 25 -1 -1 -1 -1 -1 -1 -1 205.TIF "OLD FORT" 1930 4 1 -1 -1 NC -1 -1 -1 -1 -1 -1 206.TIF 1931 3 3 -1 -1 OW -1 -1 -1 -1 -1 -1 209.TIF LOWER PORTION CHANNELS 1932 3 22 -1 -1 NC -1 -1 -1 -1 -1 -1 217.TIF 1932 3 29 13 -1 NC -1 -1 -1 -1 -1 -1 525.TIF RABER 1932 4 5 -1 -1 NC -1 -1 -1 -1 -1 -1 218.TIF 1932 4 12 -1 -1 BK -1 -1 RT -1 -1 -1 -1 219.TIF TO SIX MILE POINT 1932 4 12 -1 -1 SO -1 -1 -1 -1 -1 -1 219.TIF BELOW SIX MILE POINT 1933 3 7 2 3 RT -1 -1 -1 -1 -1 -1 220.TIF WEST END 1933 3 7 18 22 RT -1 -1 -1 -1 -1 -1 220.TIF LOWER END 1933 3 7 24 -1 RT -1 -1 -1 -1 -1 -1 220.TIF RABER 1933 3 14 6 20 IN -1 -1 -1 -1 -1 -1 221.TIF 1933 3 21 4 18 -1 -1 -1 -1 -1 -1 222.TIF 1933 3 21 22 26 -1 -1 -1 -1 -1 -1 222.TIF LOWER RIVER 1933 3 28 -1 -1 NC -1 -1 -1 -1 -1 -1 223.TIF 1933 4 4 24 -1 -1 -1 -1 -1 -1 -1 224.TIF LOWER STREAM 1933 4 11 24 -1 -1 -1 -1 -1 -1 -1 225.TIF LOWER STRETCHES 1933 4 18 -1 -1 OW -1 -1 -1 -1 -1 -1 226.TIF LOCKS TO SIX MILE POINT 1933 4 18 -1 -1 SO -1 -1 DC -1 -1 -1 -1 226.TIF BELOW SIX MILE POINT 1933 4 25 -1 -1 IP -1 -1 -1 -1 -1 -1 227.TIF 1934 3 6 20 26 SO -1 -1 -1 -1 -1 -1 228.TIF EXCEPT FOR RAPIDS 1934 3 13 23 -1 -1 -1 -1 -1 -1 -1 229.TIF 1934 3 20 20 26 -1 -1 -1 -1 -1 -1 230.TIF 1934 4 10 24 -1 RT -1 -1 -1 -1 -1 -1 233.TIF 1934 4 17 8 -1 SO -1 -1 IN -1 -1 -1 -1 234.TIF MOST POINTS 1934 4 24 -1 -1 DC -1 -1 SW -1 -1 -1 -1 235.TIF THE NARROWEST CHANNELS 1934 5 1 -1 -1 OW -1 -1 -1 -1 -1 -1 236.TIF 1935 3 5 12 18 SO -1 -1 -1 -1 -1 -1 237.TIF EXCEPT BELOW RAPIDS 1935 3 12 14 20 NC -1 -1 -1 -1 -1 -1 238.TIF 1935 3 19 14 20 NC -1 -1 -1 -1 -1 -1 239.TIF 1935 3 26 -1 -1 RT -1 -1 -1 -1 -1 -1 240.TIF 1935 4 2 -1 -1 OW -1 -1 -1 -1 -1 -1 241.TIF RAPIDS TO FIVE MILE POINT 1935 4 2 18 20 SO -1 -1 -1 -1 -1 -1 241.TIF EXCEPT RAPIDS TO FIVE MILE PT. 1935 4 9 14 18 DC -1 -1 -1 -1 -1 -1 242.TIF UPPER RIVER 1935 4 9 -1 -1 OW -1 -1 -1 -1 -1 -1 242.TIF VIDAL SHOALS: N TO BRUSH POINT 1935 4 16 -1 -1 OW -1 -1 -1 -1 -1 -1 243.TIF EXCEPT NORTH END 1935 4 16 -1 -1 WI -1 -1 -1 -1 -1 -1 243.TIF N END: TO 3Mi N OF IROQUOIS LT 1936 3 10 -1 -1 SO -1 -1 -1 -1 -1 -1 244.TIF EXCEPT RAPIDS 1936 3 17 -1 -1 NC -1 -1 -1 -1 -1 -1 245.TIF 1936 3 23 -1 -1 OW -1 -1 -1 -1 -1 -1 246.TIF AT AND NEAR RAPIDS 1936 3 23 -1 -1 IP -1 -1 RT -1 -1 -1 -1 246.TIF 1936 3 30 20 -1 RT -1 -1 -1 -1 -1 -1 247.TIF 1936 3 30 -1 -1 OW -1 -1 -1 -1 -1 -1 247.TIF RAPIDS TO SUGAR ISLAND FERRY 1936 4 6 19 -1 SO -1 -1 -1 -1 -1 -1 248.TIF EXCEPT IN RAPIDS 1936 4 6 -1 -1 OW -1 -1 -1 -1 -1 -1 248.TIF RAPIDS TO FIVE MILE POINT 1936 4 13 -1 -1 RT -1 -1 SW -1 -1 -1 -1 249.TIF 1936 4 20 -1 -1 OW -1 -1 -1 -1 -1 -1 250.TIF EXCEPT BELOW ST. JOSEPH ISLAND 1936 4 27 -1 -1 OW -1 -1 -1 -1 -1 -1 251.TIF EXCEPT BELOW ST. JOSEPH ISLAND 1936 4 27 -1 -1 IP -1 -1 -1 -1 -1 -1 251.TIF BELOW ST. JOSEPH ISLAND 1937 3 15 22 -1 IN -1 -1 -1 -1 -1 -1 255.TIF USUAL MEASUREMENT AREAS 1937 3 15 10 14 -1 -1 -1 -1 -1 -1 255.TIF IN CURRENT 1937 3 22 -1 -1 CL -1 -1 -1 -1 -1 -1 256.TIF 1937 3 29 -1 -1 SO -1 -1 CL -1 -1 -1 -1 257.TIF 1937 4 5 -1 -1 RT -1 -1 SW -1 -1 -1 -1 258.TIF 1937 4 12 -1 -1 OW -1 -1 -1 -1 -1 -1 259.TIF NAVIGABLE AREA 1937 4 19 -1 -1 OW -1 -1 -1 -1 -1 -1 260.TIF 1938 3 7 -1 -1 SO -1 -1 IN -1 -1 -1 -1 261.TIF 1938 3 7 -1 -1 SW -1 -1 -1 -1 -1 -1 261.TIF CRAB ISLAND 1938 3 7 15 26 -1 -1 -1 -1 -1 -1 261.TIF HARBORS 1938 3 14 24 -1 SC -1 -1 NC -1 -1 -1 -1 262.TIF 1938 3 21 -1 -1 CL -1 -1 SW -1 -1 -1 -1 263.TIF 1938 4 4 -1 -1 HF -1 -1 -1 -1 -1 -1 265.TIF BELOW SIX MILE POINT 1938 4 11 15 18 SO -1 -1 -1 -1 -1 -1 266.TIF 1938 4 18 -1 -1 DI -1 -1 -1 -1 -1 -1 267.TIF 1939 3 6 -1 -1 SO -1 -1 -1 -1 -1 -1 268.TIF 1939 3 13 -1 -1 IN -1 -1 -1 -1 -1 -1 269.TIF 1939 3 20 -1 -1 SO -1 -1 -1 -1 -1 -1 270.TIF 1939 4 10 24 -1 NC -1 -1 -1 -1 -1 -1 273.TIF 1939 4 17 -1 -1 RT -1 -1 SW -1 -1 -1 -1 274.TIF 1939 4 17 -1 -1 OW -1 -1 -1 -1 -1 -1 274.TIF LOCKS TO LITTLE RAPIDS CUT 1939 4 17 -1 -1 OW -1 -1 -1 -1 -1 -1 274.TIF CHANNEL TO SIX MILE POINT 1939 4 24 -1 -1 BK -1 -1 -1 -1 -1 -1 275.TIF LOCKS TO LAKE HURON (CUT) 1940 3 4 14 -1 -1 -1 -1 -1 -1 -1 277.TIF ABOVE LOCKS 1940 3 4 6 12 -1 -1 -1 -1 -1 -1 277.TIF BELOW LOCKS 1940 3 11 -1 -1 CL -1 -1 -1 -1 -1 -1 278.TIF 1940 3 24 -1 -1 IN -1 -1 -1 -1 -1 -1 280.TIF 1940 4 1 -1 -1 OW -1 -1 -1 -1 -1 -1 281.TIF BELOW LOCKS TO SIX MILE POINT 1940 4 1 -1 -1 RT -1 -1 -1 -1 -1 -1 281.TIF ABOVE THE LOCKS 1940 4 15 -1 -1 SW -1 -1 -1 -1 -1 -1 283.TIF MAIN CHANNEL 1940 4 15 -1 -1 BK -1 -1 -1 -1 -1 -1 283.TIF ABOVE THE LOCKS 1940 4 22 -1 -1 IP -1 -1 -1 -1 -1 -1 284.TIF 1941 3 31 72 144 PI -1 -1 -1 -1 -1 -1 289.TIF UPPER RIVER TO BRUSH POINT 1941 3 31 -1 -1 OW -1 -1 -1 -1 -1 -1 289.TIF LOWER RIVER TO L. HURON 1941 4 7 -1 -1 LI -1 -1 -1 -1 -1 -1 290.TIF ENTIRE LENGTH 1941 4 14 -1 -1 SW -1 -1 -1 -1 -1 -1 291.TIF 1942 3 9 6 20 NC -1 -1 -1 -1 -1 -1 292.TIF 1942 3 9 20 -1 HF -1 -1 -1 -1 -1 -1 292.TIF LOWER RIVER 1942 3 16 -1 -1 SO -1 -1 SC -1 -1 -1 -1 293.TIF EXCEPT PART OF CANAL 1942 3 23 -1 -1 BK -1 -1 -1 -1 -1 -1 294.TIF MOUTH OF RIVER 1942 3 30 -1 -1 OW -1 -1 -1 -1 -1 -1 295.TIF CHANNEL: ENTIRE DISTANCE 1943 3 1 16 24 SO -1 -1 -1 -1 -1 -1 298.TIF ENTIRE LENGTH 1943 3 8 18 -1 -1 -1 -1 -1 -1 -1 299.TIF UPPER STRETCHES 1943 3 8 20 26 -1 -1 -1 -1 -1 -1 299.TIF LAKE AREAS OF LOWER RIVER 1943 3 15 20 26 NC -1 -1 -1 -1 -1 -1 300.TIF LAKE AREAS OF LOWER RIVER 1943 3 15 18 20 NC -1 -1 -1 -1 -1 -1 300.TIF UPPER STRETCHES 1943 3 22 18 -1 SC -1 -1 -1 -1 -1 -1 301.TIF UPPER STRETCHES 1943 3 22 20 26 SC -1 -1 -1 -1 -1 -1 301.TIF LAKE AREAS OF LOWER RIVER 1943 3 29 -1 -1 OW -1 -1 -1 -1 -1 -1 302.TIF LOCKS TO 1 & 1/2Mi BELOW 1943 3 29 14 16 DC -1 -1 -1 -1 -1 -1 302.TIF UPPER STRETCHES 1943 3 29 16 22 DC -1 -1 -1 -1 -1 -1 302.TIF LOWER RIVER 1943 4 5 -1 -1 OW -1 -1 -1 -1 -1 -1 303.TIF LOCKS TO 1 & 1/2Mi BELOW 1943 4 5 14 16 SO -1 -1 -1 -1 -1 -1 303.TIF UPPER RIVER 1943 4 5 18 22 SO -1 -1 CL -1 -1 -1 -1 303.TIF LOWER RIVER 1943 4 12 -1 -1 SW -1 -1 -1 -1 -1 -1 304.TIF LOWER RIVER 1943 4 19 -1 -1 OW -1 -1 -1 -1 -1 -1 305.TIF ENTIRE LENGTH 1943 4 26 -1 -1 OW -1 -1 -1 -1 -1 -1 306.TIF 1944 3 20 22 -1 -1 -1 -1 -1 -1 -1 310.TIF LAKE TO DETOUR PASSAGE 1944 3 27 -1 -1 SW -1 -1 -1 -1 -1 -1 311.TIF DRUMMOND ISL. FERRY SLIP (CUT) 1944 3 27 -1 -1 SW -1 -1 -1 -1 -1 -1 311.TIF TO LIME ISLAND DOCK (CUT) 1944 4 3 -1 -1 BK -1 -1 -1 -1 -1 -1 312.TIF UPPER RIVER (CUT) 1944 4 10 -1 -1 SO -1 -1 -1 -1 -1 -1 313.TIF UPPER RIVER 1945 3 26 -1 -1 OW -1 -1 -1 -1 -1 -1 316.TIF STEAMER CHANNEL THROUGHOUT 1945 4 2 -1 -1 OW -1 -1 -1 -1 -1 -1 317.TIF 1946 3 4 -1 -1 SO -1 -1 -1 -1 -1 -1 318.TIF 1946 3 11 30 -1 -1 -1 -1 -1 -1 -1 319.TIF ABOVE LIGHTHOUSE POINT 1946 3 18 -1 -1 SW -1 -1 -1 -1 -1 -1 320.TIF UPPER RIVER 1946 3 25 -1 -1 IP -1 -1 RT -1 -1 -1 -1 321.TIF 1946 4 1 -1 -1 OW -1 -1 -1 -1 -1 -1 322.TIF CHANNEL 1946 4 8 -1 -1 LF -1 -1 DI -1 -1 -1 -1 323.TIF 1947 2 19 14 30 -1 -1 -1 -1 -1 -1 325.TIF 1947 3 3 14 30 -1 -1 -1 -1 -1 -1 326.TIF 1947 3 10 14 30 -1 -1 -1 -1 -1 -1 327.TIF 1947 3 10 -1 -1 SW -1 -1 -1 -1 -1 -1 327.TIF NORTH OF DRUMMOND FERRY DOCK 1947 3 24 16 18 -1 -1 -1 -1 -1 -1 329.TIF UPPER RIVER 1947 3 24 15 16 -1 -1 -1 -1 -1 -1 329.TIF LOWER RIVER 1947 3 31 14 -1 -1 -1 -1 -1 -1 -1 330.TIF BIG POINT TO LOCKS 1947 3 31 -1 -1 OW -1 -1 -1 -1 -1 -1 330.TIF LOCK CUT 1947 3 31 24 30 -1 -1 -1 -1 -1 -1 330.TIF UPBOUND CHANNEL 1947 3 31 24 30 -1 -1 -1 -1 -1 -1 330.TIF LOOKOUT #1 1947 3 31 24 30 -1 -1 -1 -1 -1 -1 330.TIF DARK HOLE RANGE CHANNEL 1947 4 7 14 16 SO -1 -1 -1 -1 -1 -1 331.TIF BIG POINT TO LOCKS 1947 4 7 20 -1 RT -1 -1 -1 -1 -1 -1 331.TIF UPBOUND CHANNEL OFF #1 LOOKOUT 1947 4 14 -1 -1 OW -1 -1 -1 -1 -1 -1 332.TIF UPPER & LOWER CHANNELS 1947 4 21 -1 -1 OW -1 -1 -1 -1 -1 -1 333.TIF 1948 3 8 23 -1 SO -1 -1 -1 -1 -1 -1 335.TIF 1948 3 8 -1 -1 OW -1 -1 -1 -1 -1 -1 335.TIF SOO RAPIDS 1948 3 15 18 24 -1 -1 -1 -1 -1 -1 336.TIF 1948 3 22 -1 -1 OW -1 -1 -1 -1 -1 -1 337.TIF (CUT) 1948 3 29 -1 -1 -1 -1 -1 -1 -1 -1 338.TIF CHANNEL: LOCKS TO BIRCH POINT 1948 3 29 -1 -1 LF -1 -1 -1 -1 -1 -1 338.TIF BELOW PIPE ISLAND 1948 4 5 -1 -1 OW -1 -1 -1 -1 -1 -1 339.TIF BELOW LOCKS TO LAKE MUNUSCONG 1948 4 12 -1 -1 RI -1 -1 -1 -1 -1 -1 340.TIF UPPER & LOWER CHANNELS 1949 3 28 -1 -1 LI -1 -1 -1 -1 -1 -1 347.TIF LOWER RIVER 1950 2 27 10 14 -1 -1 -1 -1 -1 -1 349.TIF 1950 3 6 18 20 -1 -1 -1 -1 -1 -1 350.TIF UPPER RIVER 1950 3 6 18 24 -1 -1 -1 -1 -1 -1 350.TIF LOWER RIVER 1950 3 6 30 -1 -1 -1 -1 -1 -1 -1 350.TIF BACK BAYS 1950 3 13 18 20 IP -1 -1 BV -1 -1 -1 -1 351.TIF UPPER RIVER 1950 3 13 28 -1 CL 16 -1 -1 -1 -1 -1 351.TIF LOWER RIVER 1950 3 13 -1 -1 OW -1 -1 BV -1 -1 -1 -1 351.TIF DRUMMOND ISLAND FERRY 1950 3 20 22 30 -1 -1 -1 -1 -1 -1 352.TIF 1950 3 20 20 24 -1 -1 -1 -1 -1 -1 352.TIF LOWER RIVER 1950 3 27 23 25 WI 24 36 -1 -1 -1 -1 353.TIF IN CHANNEL 1950 3 27 -1 -1 IP -1 -1 -1 -1 -1 -1 353.TIF UPPER RIVER 1950 4 3 18 24 SC -1 -1 -1 -1 -1 -1 354.TIF UPPER RIVER 1950 4 3 18 23 WT 1 -1 -1 -1 -1 -1 354.TIF LOWER RIVER 1950 4 10 25 -1 SO -1 -1 SC -1 -1 -1 -1 355.TIF UPPER RIVER 1950 4 10 27 -1 CL -1 -1 SC 3 4 -1 -1 355.TIF LOWER RIVER: CHANNEL 1950 4 17 -1 -1 SO -1 -1 RT -1 -1 -1 -1 356.TIF MOST STATIONS 1951 3 12 10 22 -1 -1 -1 -1 -1 -1 361.TIF UPPER RIVER 1951 3 12 -1 -1 OW -1 -1 -1 -1 -1 -1 361.TIF FUEL DOCK TO LOCKS 1951 3 12 -1 -1 OW -1 -1 -1 -1 -1 -1 361.TIF LOCKS TO SIX MILE POINT RANGE 1951 4 9 -1 -1 LI -1 -1 -1 -1 -1 -1 365.TIF LOWER RIVER 1951 4 16 -1 -1 LI -1 -1 -1 -1 -1 -1 366.TIF 1952 2 25 8 13 -1 -1 -1 -1 -1 -1 367.TIF 1952 2 25 12 19 -1 -1 -1 -1 -1 -1 367.TIF BEYOND PIPE ISLAND 1952 3 3 12 -1 -1 -1 -1 -1 -1 -1 368.TIF UPPER RIVER 1952 3 3 10 -1 -1 -1 -1 -1 -1 -1 368.TIF LOWER RIVER 1952 3 31 -1 -1 SW -1 -1 -1 -1 -1 -1 372.TIF BELOW LOOKOUT NO. 6 1952 3 31 20 30 SO -1 -1 CL -1 -1 -1 -1 372.TIF MOST OF LOWER RIVER 1952 4 7 -1 -1 IJ -1 -1 PI -1 -1 -1 -1 373.TIF UPPER RIVER 1952 4 14 -1 -1 DI -1 -1 PI -1 -1 -1 -1 374.TIF UPPER RIVER 1952 4 14 -1 -1 DI -1 -1 PI -1 -1 -1 -1 374.TIF LOWER RIVER CHANNELS 1953 2 24 2 8 SC 22 -1 -1 -1 -1 -1 375.TIF 1953 3 2 3 9 SC 20 -1 -1 -1 -1 -1 528.TIF 1953 3 9 7 -1 SC -1 -1 -1 -1 -1 -1 376.TIF 1953 3 9 16 -1 -1 -1 -1 -1 -1 -1 376.TIF SPRING BAY 1953 3 9 10 -1 SO -1 -1 -1 -1 -1 -1 377.TIF LOWER RIVER 1953 3 16 6 -1 SO -1 -1 CL -1 -1 SC -1 -1 378.TIF DISPATCH STATION DOCK 1953 3 16 12 14 SC 8 10 WT 2 6 RT -1 -1 378.TIF DARK HOLE & HARWOOD POINT 1953 3 30 -1 -1 DI -1 -1 BK -1 -1 -1 -1 380.TIF UPPER RIVER (CUT) 1953 3 30 -1 -1 DI -1 -1 -1 -1 -1 -1 380.TIF LOWER RIVER: CHANNEL 1954 3 8 -1 -1 SO -1 -1 -1 -1 -1 -1 382.TIF ABOVE LOCKS 1954 3 15 -1 -1 SO -1 -1 -1 -1 -1 -1 383.TIF UPPER RIVER 1954 3 15 14 -1 CL -1 -1 -1 -1 -1 -1 383.TIF SAILORS ENCAMPMENT AREA 1954 3 22 -1 -1 SO -1 -1 -1 -1 -1 -1 384.TIF LOWER RIVER 1954 3 29 6 10 SO -1 -1 -1 -1 -1 -1 385.TIF UPPER RIVER 1954 4 5 -1 -1 SO -1 -1 -1 -1 -1 -1 386.TIF LOWER RIVER 1954 4 5 -1 -1 IP -1 -1 -1 -1 -1 -1 386.TIF SABIN LOCK 1954 4 12 1 10 BK -1 -1 RT -1 -1 -1 -1 387.TIF CHANNEL: TO POINT LOUISE (CUT) 1954 4 12 -1 -1 BK -1 -1 -1 -1 -1 -1 387.TIF LOWER RIVER (CUT) 1954 4 19 -1 -1 OW -1 -1 -1 -1 -1 -1 388.TIF LOCKS TO LAKE MUNUSCONG 1955 2 28 12 18 CL -1 -1 SC -1 -1 -1 -1 389.TIF 1955 3 14 13 15 CL -1 -1 SW -1 -1 -1 -1 393.TIF LOWER RIVER 1955 3 14 12 -1 CL -1 -1 -1 -1 -1 -1 393.TIF CHANNEL: SIX MILE POINT RANGE 1955 3 14 -1 -1 OW -1 -1 -1 -1 -1 -1 393.TIF FRYING PAN ISLAND INTO L HURON 1955 3 21 5 8 CL -1 -1 SI 4 6 -1 -1 394.TIF UPPER RIVER 1955 3 21 -1 -1 DI -1 -1 -1 -1 -1 -1 394.TIF BELOW PIPE ISLAND 1955 3 28 8 -1 SC 10 14 -1 -1 -1 -1 395.TIF BIG POINT: CENTER OF CHANNEL 1955 3 28 16 22 BK -1 -1 SC 10 14 -1 -1 395.TIF LOWER RIVER HARBORS (CUT) 1955 4 11 -1 -1 BK -1 -1 -1 -1 -1 -1 396.TIF LOWER RIVER 1956 2 27 6 8 -1 -1 -1 -1 -1 -1 397.TIF UPPER RIVER CHANNEL 1956 2 27 -1 -1 OW -1 -1 -1 -1 -1 -1 397.TIF CHARLOTTE RIVER: TO 3Mi SOUTH 1956 2 27 -1 -1 OW -1 -1 -1 -1 -1 -1 397.TIF DRUMMOND ISLAND INTO L. HURON 1956 3 12 18 -1 -1 -1 -1 -1 -1 -1 401.TIF CHANNEL: BAY MILLS AREA 1956 3 12 7 -1 -1 -1 -1 -1 -1 -1 401.TIF LOOKOUT STATION #6 1956 3 12 -1 -1 SO -1 -1 SW -1 -1 -1 -1 401.TIF UPPER RIVER 1956 3 12 -1 -1 OW -1 -1 -1 -1 -1 -1 401.TIF CHARLOTTE RIVER MOUTH: TO 1Mi 1956 3 19 8 -1 -1 -1 -1 -1 -1 -1 402.TIF CHANNEL: LOOKOUT STATION #6 1956 3 19 -1 -1 OW -1 -1 -1 -1 -1 -1 402.TIF TO 1/2Mi S OF CHARLOTTE RIVER 1956 3 26 -1 -1 OW -1 -1 -1 -1 -1 -1 403.TIF CEDAR POINT TO POINT LOUISE 1956 4 2 -1 -1 OW -1 -1 -1 -1 -1 -1 404.TIF CEDAR POINT TO BRUSH POINT 1957 2 25 -1 -1 SO -1 -1 -1 -1 -1 -1 407.TIF 1957 3 4 15 -1 CL -1 -1 SL 3 -1 SC 1 -1 409.TIF DISPATCH TO LOCKS 1957 3 11 18 -1 CL -1 -1 SC 3 -1 -1 -1 411.TIF DISPATCH STATION TO LOCKS 1957 3 11 18 22 CL -1 -1 -1 -1 -1 -1 411.TIF BUOY 90 TO WINTER POINT 1957 3 11 20 -1 CL -1 -1 -1 -1 -1 -1 411.TIF WINTER POINT TO DETOUR 1957 4 1 -1 -1 RT -1 -1 -1 -1 -1 -1 414.TIF MISSION POINT 1957 4 1 -1 -1 OW -1 -1 -1 -1 -1 -1 414.TIF BUOY 32: TO LOCKS 1957 4 1 -1 -1 OW -1 -1 -1 -1 -1 -1 414.TIF LOCKS: TO BEYOND SIX MILE PT. 1958 2 24 -1 -1 SO -1 -1 -1 -1 -1 -1 416.TIF UPPER & LOWER APPROACHES 1958 3 3 18 22 CL -1 -1 -1 -1 -1 -1 417.TIF WINTER POINT TO PIPE ISLAND 1958 3 10 19 23 FS -1 -1 CL -1 -1 -1 -1 418.TIF KEMPS POINT TO PIPE ISLAND 1958 3 24 19 23 -1 -1 -1 -1 -1 -1 420.TIF PT. AUX FRENES: TO LIME ISLAND 1958 3 31 21 -1 -1 -1 -1 -1 -1 -1 421.TIF PT. AUX FRENES: TO LIME ISLAND 1958 4 7 -1 -1 IP -1 -1 -1 -1 -1 -1 422.TIF ABOVE LOCKS: ALONG SHORE 1958 4 7 -1 -1 LI -1 -1 -1 -1 -1 -1 422.TIF PT. AUX FRENES: TO LIME ISLAND 1958 4 14 -1 -1 LI -1 -1 BK -1 -1 -1 -1 423.TIF LOWER RIVER 1959 3 2 25 -1 -1 -1 -1 -1 -1 -1 424.TIF SPRING BAY DOCK 1959 3 2 -1 -1 SO -1 -1 -1 -1 -1 -1 424.TIF MOST OF RIVER 1959 3 9 25 -1 -1 -1 -1 -1 -1 -1 425.TIF SPRING BAY 1959 3 9 20 21 -1 -1 -1 -1 -1 -1 425.TIF CANADIAN SAULT: W OF CANAL 1959 3 9 18 24 -1 -1 -1 -1 -1 -1 425.TIF CANADIAN SAULT: E OF CANAL 1959 3 9 34 -1 -1 -1 -1 -1 -1 -1 425.TIF C. P. R. BRIDGE 1959 3 9 -1 -1 OW -1 -1 -1 -1 -1 -1 425.TIF 5Mi ABOVE & BELOW LOCKS 1959 3 16 23 -1 SC -1 -1 SW -1 -1 -1 -1 426.TIF 1959 3 16 -1 -1 OW -1 -1 -1 -1 -1 -1 426.TIF DOWN TO SIX MILE POINT 1959 3 23 13 15 -1 -1 -1 -1 -1 -1 427.TIF CANADIAN SOO: EAST OF CANAL 1959 3 23 19 20 -1 -1 -1 -1 -1 -1 427.TIF CANADIAN SOO: WEST OF CANAL 1959 3 23 33 -1 -1 -1 -1 -1 -1 -1 427.TIF C. P. R. BRIDGE 1959 4 6 15 24 FS -1 -1 CL -1 -1 -1 -1 430.TIF WINTER POINT TO PIPE ISLAND 1959 4 6 -1 -1 RT -1 -1 -1 -1 -1 -1 430.TIF STRIBLING PT TO LOWER ROCK CUT 1959 4 13 -1 -1 SO -1 -1 -1 -1 -1 -1 431.TIF LOWER: EVERNS PT. TO LIME ISL. 1959 4 20 -1 -1 LI -1 -1 -1 -1 -1 -1 432.TIF 1959 4 27 -1 -1 LI -1 -1 -1 -1 -1 -1 433.TIF 1960 2 29 -1 -1 SO -1 -1 -1 -1 -1 -1 522.TIF UPPER RIVER 1960 3 7 8 -1 -1 -1 -1 -1 -1 -1 434.TIF VIDAL SHOALS 1960 3 7 -1 -1 OW -1 -1 -1 -1 -1 -1 434.TIF BELOW PIPE ISLAND 1960 3 7 8 17 SW -1 -1 -1 -1 -1 -1 434.TIF 1960 3 14 20 -1 FD -1 -1 FS -1 -1 -1 -1 435.TIF UPPER RIVER 1960 3 14 -1 -1 FS -1 -1 -1 -1 -1 -1 435.TIF TO PIPE ISLAND 1960 3 21 -1 -1 OW -1 -1 -1 -1 -1 -1 436.TIF SOUTH OF PIPE ISLAND 1960 3 21 36 -1 -1 -1 -1 -1 -1 -1 436.TIF JUST ABOVE MACARTHUR LOCK 1960 3 21 -1 -1 OW -1 -1 -1 -1 -1 -1 436.TIF SOUTH CHANNEL (CUT) 1960 3 28 -1 -1 FD -1 -1 FS -1 -1 -1 -1 437.TIF UPPER RIVER 1960 4 4 20 -1 -1 -1 -1 -1 -1 -1 438.TIF JUST ABOVE LOCKS 1960 4 4 -1 -1 SW -1 -1 -1 -1 -1 -1 438.TIF UPPER RIVER 1960 4 11 -1 -1 IP -1 -1 -1 -1 -1 -1 439.TIF LOWER RIVER 1961 3 6 8 13 -1 -1 -1 -1 -1 -1 441.TIF CANADIAN SOO: E OF LOCKS 1961 3 6 18 23 -1 -1 -1 -1 -1 -1 441.TIF CANADIAN SOO: W OF LOCKS 1961 3 6 -1 -1 SW -1 -1 -1 -1 -1 -1 441.TIF CHANNEL ABOVE LOCKS 1961 3 6 28 -1 -1 -1 -1 -1 -1 -1 441.TIF ABOVE WINTER LOCK 1961 3 6 22 -1 CL -1 -1 -1 -1 -1 -1 441.TIF LOWER RIVER 1961 3 6 9 13 -1 -1 -1 -1 -1 -1 441.TIF FIVE MILE POINT 1961 3 6 18 20 SW -1 -1 -1 -1 -1 -1 441.TIF STRIBLING PT. TO L. MUNUSCONG 1961 3 13 -1 -1 SW -1 -1 -1 -1 -1 -1 442.TIF UPPER RIVER 1961 3 13 7 13 -1 -1 -1 -1 -1 -1 442.TIF CANADIAN SOO: E OF LOCKS 1961 3 13 17 21 -1 -1 -1 -1 -1 -1 442.TIF CANADIAN SOO: W OF LOCKS 1961 3 13 16 20 SO -1 -1 CL -1 -1 -1 -1 442.TIF STRIBLING POINT AREA 1961 3 20 -1 -1 OW -1 -1 -1 -1 -1 -1 443.TIF LOWER RIVER: LOCKS TO 6Mi PT. 1961 3 20 8 -1 -1 -1 -1 -1 -1 -1 443.TIF CANADIAN SOO: JUST E OF LOCK 1961 3 20 16 -1 -1 -1 -1 -1 -1 -1 443.TIF CANADIAN SOO: 700FT E OF LOCK 1961 3 20 18 -1 -1 -1 -1 -1 -1 -1 443.TIF CANADIAN SOO: 1000FT W OF LOCK 1961 3 20 22 -1 CL -1 -1 -1 -1 -1 -1 443.TIF CANADIAN SOO: 2000FT W OF LOCK 1961 3 27 5 12 -1 -1 -1 -1 -1 -1 444.TIF CANADIAN SOO: E OF LOCKS 1961 3 27 15 18 -1 -1 -1 -1 -1 -1 444.TIF CANADIAN SOO: W OF LOCKS 1961 3 27 14 -1 FS -1 -1 SI -1 -1 CL -1 -1 444.TIF BETWEEN JOHNSON & MIRRE POINTS 1961 4 3 -1 -1 BK -1 -1 -1 -1 -1 -1 445.TIF LOWER RIVER CHANNELS (CUT) 1962 2 26 -1 -1 IP -1 -1 SC -1 -1 -1 -1 447.TIF ENTIRE RIVER 1962 2 26 15 18 -1 -1 -1 -1 -1 -1 447.TIF W OF LOCK 1962 2 26 12 -1 -1 -1 -1 -1 -1 -1 447.TIF E OF LOCK 1962 3 19 6 28 CL -1 -1 -1 -1 -1 -1 450.TIF UPPER RIVER 1962 3 19 8 24 SL 2 4 RT -1 -1 -1 -1 450.TIF LOWER RIVER 1962 3 26 -1 -1 RT -1 -1 -1 -1 -1 -1 451.TIF 1962 3 26 -1 -1 SW -1 -1 -1 -1 -1 -1 451.TIF FERRY LANES 1962 4 2 -1 -1 SW -1 -1 -1 -1 -1 -1 452.TIF UPPER RIVER 1962 4 23 -1 -1 LI -1 -1 -1 -1 -1 -1 455.TIF 1963 3 4 16 -1 -1 -1 -1 -1 -1 -1 457.TIF CANADIAN SOO: W OF CANAL 1963 3 4 12 -1 CL -1 -1 -1 -1 -1 -1 457.TIF CANADIAN SOO: E OF CANAL 1963 3 4 -1 -1 OW -1 -1 -1 -1 -1 -1 457.TIF FT. GRATIOT TO 2Mi BELOW BRIDG 1963 3 18 -1 -1 OW -1 -1 -1 -1 -1 -1 459.TIF SUGAR ISLAND FERRY TRACK 1963 4 1 16 -1 -1 -1 -1 -1 -1 -1 461.TIF UPPER RIVER 1963 4 1 -1 -1 OW -1 -1 -1 -1 -1 -1 461.TIF TO FRECHETTE POINT 1963 4 8 30 -1 -1 -1 -1 -1 -1 -1 462.TIF LOWER RIVER 1964 2 24 6 -1 FD -1 -1 FS -1 -1 SC -1 2 465.TIF 0 1964 3 2 7 15 CL -1 -1 -1 -1 -1 -1 466.TIF UPPER RIVER 1964 3 2 -1 -1 OW -1 -1 -1 -1 -1 -1 466.TIF FRYING PAN ISLAND S TO L HURON 1964 3 9 -1 -1 FD -1 -1 FS -1 -1 CL -1 -1 467.TIF UPPER RIVER 1964 3 16 -1 -1 SO -1 -1 -1 -1 -1 -1 468.TIF N CHANNEL 1964 3 23 10 -1 FD -1 -1 FS -1 -1 SC -1 -1 469.TIF UPPER RIVER 1964 3 23 28 -1 FD -1 -1 FS -1 -1 SC -1 -1 469.TIF PT. AUX FRENES: TO PIPE TWINS 1964 3 30 10 -1 FS -1 -1 FD -1 -1 SC -1 -1 470.TIF 1964 4 6 -1 -1 DI -1 -1 BI -1 -1 SI -1 -1 471.TIF 1964 4 13 -1 -1 LI -1 -1 -1 -1 -1 -1 472.TIF UPPER RIVER 1964 4 13 -1 -1 HF -1 -1 RT -1 -1 -1 -1 472.TIF LOWER RIVER 1965 2 23 -1 -1 SO -1 -1 -1 -1 -1 -1 473.TIF 1965 3 8 -1 -1 FD -1 -1 FS -1 -1 CL -1 -1 475.TIF 1965 3 22 -1 -1 SO -1 -1 CL -1 -1 SC -1 -1 477.TIF 6 1965 3 29 -1 -1 NI -1 -1 SC -1 -1 -1 -1 478.TIF 1965 4 5 -1 -1 SO -1 -1 SC 3 -1 -1 -1 479.TIF 1965 4 5 -1 -1 OW -1 -1 -1 -1 -1 -1 479.TIF INTERNATIONAL BRIDGE: TO 3Mi W 1965 4 12 -1 -1 BK -1 -1 -1 -1 -1 -1 480.TIF LOWER RIVER (CUT) 1965 4 19 -1 -1 BK -1 -1 -1 -1 -1 -1 481.TIF UPPER RIVER (CUT) 1966 2 28 -1 -1 SO -1 -1 SW -1 -1 -1 -1 483.TIF 1966 3 7 -1 -1 RT -1 -1 SC 1 -1 -1 -1 484.TIF 1967 2 27 18 22 SO -1 -1 SC -1 -1 -1 -1 489.TIF 1967 3 6 12 16 FS -1 -1 CL -1 -1 SC -1 -1 490.TIF 1967 3 13 13 17 SC 1 3 SW -1 -1 -1 -1 491.TIF 1967 3 20 15 19 -1 -1 -1 -1 -1 -1 492.TIF 1967 4 3 16 17 FS -1 -1 RT -1 -1 -1 -1 494.TIF EXCEPT LOWER RIVER 1967 4 10 -1 -1 OW -1 -1 -1 -1 -1 -1 495.TIF ABOVE FRECHETTE 1967 4 10 10 14 RT -1 -1 SW -1 -1 -1 -1 495.TIF EXCEPT LOWER RIVER 1967 4 17 -1 -1 RT -1 -1 -1 -1 -1 -1 496.TIF LOWER RIVER: ALONG SHORE 1967 4 17 -1 -1 OW -1 -1 -1 -1 -1 -1 496.TIF CHANNEL 1968 2 26 5 18 SO -1 -1 -1 -1 -1 -1 521.TIF 1968 2 26 -1 -1 WI -1 72 -1 -1 -1 -1 521.TIF ABOVE LAKE NICOLET 1968 3 4 5 18 SW -1 -1 WI -1 -1 -1 -1 520.TIF 1968 3 11 -1 -1 SO -1 -1 FS -1 -1 -1 -1 497.TIF MIDDLE & LOWER PORTIONS 1968 3 11 8 15 SW -1 -1 -1 -1 -1 -1 497.TIF UPPER PORTIONS 1968 3 18 10 20 SW -1 -1 -1 -1 -1 -1 498.TIF LOCKS TO LITTLE RAPIDS 1968 3 25 -1 -1 SO -1 -1 FS -1 -1 -1 -1 499.TIF LOWER PORTIONS 1968 3 25 -1 -1 SO -1 -1 FS -1 -1 -1 -1 499.TIF ABOVE LOCKS 1968 3 25 -1 -1 OW -1 -1 -1 -1 -1 -1 499.TIF LOCKS: TO FRECHETTE 1968 4 8 -1 -1 OW -1 -1 -1 -1 -1 -1 501.TIF CHANNELS 1968 4 8 -1 -1 RT -1 -1 DI -1 -1 -1 -1 501.TIF ALONG SHORE 1968 4 15 -1 -1 OW -1 -1 -1 -1 -1 -1 502.TIF CHANNELS 1968 4 15 -1 -1 LF -1 -1 RT -1 -1 DI -1 -1 502.TIF EXCEPT CHANNEL AREAS 1969 2 24 12 -1 SW -1 -1 -1 -1 -1 -1 503.TIF UPPER PORTIONS 1969 2 24 18 -1 SW -1 -1 -1 -1 -1 -1 503.TIF LOWER PORTIONS 1969 3 3 -1 -1 DI -1 -1 -1 -1 -1 -1 504.TIF UPPER RIVER (70% ICE COVER) 1969 3 3 -1 -1 FS -1 -1 -1 -1 -1 -1 504.TIF LOWER RIVER 1969 3 10 -1 -1 SO -1 -1 -1 -1 -1 -1 505.TIF 1969 3 17 10 20 SO -1 -1 SW -1 -1 -1 -1 506.TIF 1969 3 24 17 -1 -1 -1 -1 -1 -1 -1 507.TIF W OF CANAL 1969 3 24 10 13 -1 -1 -1 -1 -1 -1 507.TIF E OF CANAL 1969 3 31 18 36 IJ -1 -1 -1 -1 -1 -1 508.TIF LOWER RIVER 1969 4 7 -1 -1 DI 12 18 -1 -1 -1 -1 509.TIF 1969 4 14 -1 -1 DI -1 -1 -1 -1 -1 -1 510.TIF 1970 2 24 14 21 SM -1 -1 SW -1 -1 -1 -1 519.TIF 1970 3 3 14 23 SM -1 -1 -1 -1 -1 -1 518.TIF 1970 3 10 14 26 SM -1 -1 -1 -1 -1 -1 511.TIF 1970 3 17 15 26 SM -1 -1 -1 -1 -1 -1 512.TIF 1970 3 24 5 29 SW -1 -1 -1 -1 -1 -1 513.TIF 1970 3 25 -1 -1 -1 -1 -1 -1 -1 -1 518.TIF ANTICIPATED ICEBREAKER OPENING 1970 3 31 5 27 FS -1 -1 CL -1 -1 SW -1 -1 514.TIF 1970 4 7 -1 -1 DI -1 -1 IJ -1 -1 SW -1 -1 515.TIF CHANNEL 1970 4 8 -1 -1 -1 -1 -1 -1 -1 -1 518.TIF ANTICIPATED NATURAL OPENING 1970 4 14 -1 -1 BI -1 -1 RT -1 -1 -1 -1 516.TIF 1970 4 14 -1 -1 LI -1 -1 -1 -1 -1 -1 516.TIF CHANNEL 1970 4 21 -1 -1 PN -1 -1 BI -1 -1 SW -1 -1 517.TIF ---------------------------------------------------------------------------------------------------------- Ice thickness is in inches, -1 = no thickness reported, see report for ice conditon codes. T1 = ice thickness or part of a range if T2 is present, C1 = primary condtion of ice. T1C1 = thickness of C1 or part of range if T2C1 is presnet. C2, T1C2, T2C2, C3, T1C3, T2C3 are secondary and ternary ice conditon and condition thickness.