Rock Island District Mississippi River Historic Navigation Season Lock No. 22 Lock No. 19 Lock No.15 Lock No. 11 YEAR UP DOWN LD22 DAYS UP DOWN L19 DAYS UP DOWN LD15 DAYS UP DOWN LD11 DAYS 1963 1/3/1963 12/21/1963 352 3/1/1963 12/30/1963 304 3/29/1963 12/15/1963 261 3/29/1963 12/14/1963 260 1964 1/28/1964 12/18/1964 325 2/1/1964 12/26/1964 329 2/22/1964 12/12/1964 294 2/7/1964 12/10/1964 307 1965 3/3/1965 12/31/1965 303 3/2/1965 12/25/1965 298 3/8/1965 12/11/1965 278 3/12/1965 12/6/1965 269 1966 1/2/1966 12/31/1966 363 2/14/1966 12/17/1966 306 3/9/1966 12/10/1966 276 3/11/1966 12/9/1966 273 1967 3/1/1967 12/31/1967 305 1/1/1967 12/21/1967 354 3/11/1967 12/27/1967 291 3/17/1967 12/17/1967 275 1968 1/1/1968 12/31/1968 365 1/1/1968 12/31/1968 365 1/5/1968 12/30/1968 360 3/6/1968 12/13/1968 282 1969 1/6/1969 12/28/1969 356 1/1/1969 12/31/1969 364 2/25/1969 12/25/1969 303 3/3/1969 12/18/1969 290 1970 1/1/1970 12/29/1970 362 2/21/1970 12/27/1970 309 2/28/1970 12/23/1970 298 3/5/1970 12/12/1970 282 1971 2/25/1971 12/31/1971 309 2/28/1971 12/31/1971 306 3/3/1971 12/30/1971 302 3/10/1971 12/19/1971 284 1972 1/1/1972 12/31/1972 365 1/1/1972 12/31/1972 365 2/27/1972 12/24/1972 301 3/11/1972 12/18/1972 282 1973 1/1/1973 12/31/1973 364 1/1/1973 12/31/1973 364 2/8/1973 12/19/1973 314 3/7/1973 12/15/1973 283 1974 1/2/1974 12/29/1974 361 2/1/1974 12/31/1974 333 2/20/1974 12/31/1974 314 3/12/1974 12/14/1974 277 1975 1/1/1975 12/31/1975 364 1/1/1975 12/31/1975 364 2/20/1975 12/31/1975 314 3/1/1975 12/15/1975 289 1976 1/1/1976 12/31/1976 365 1/1/1976 12/30/1976 364 2/12/1976 12/20/1976 312 2/26/1976 12/19/1976 297 1977 2/24/1977 1/13/1978 323 2/28/1977 12/31/1977 306 3/1/1977 12/26/1977 300 3/17/1977 12/22/1977 280 1978 3/25/1978 12/31/1978 281 3/28/1978 12/29/1978 276 3/30/1978 12/26/1978 271 4/2/1978 12/1/1978 243 1979 1/1/1979 12/31/1979 364 3/13/1979 1/20/1980 313 3/19/1979 1/6/1980 293 3/27/1979 12/5/1979 253 1980 1/1/1980 12/31/1980 365 2/21/1980 1/1/1981 315 3/16/1980 12/30/1980 289 3/23/1980 12/7/1980 259 1981 1/1/1981 12/31/1981 364 1/1/1981 12/31/1981 364 2/28/1981 12/29/1981 304 3/1/1981 12/13/1981 287 1982 1/1/1982 12/31/1982 364 1/1/1982 12/31/1982 364 3/20/1982 12/31/1982 286 3/22/1982 12/15/1982 268 1983 1/1/1983 12/31/1983 364 2/22/1983 12/22/1983 303 2/27/1983 12/19/1983 295 3/1/1983 12/13/1983 287 1984 1/2/1984 12/31/1984 364 2/19/1984 12/31/1984 316 2/27/1984 12/18/1984 295 2/29/1984 12/5/1984 280 1985 1/1/1985 12/31/1985 364 1/5/1985 12/21/1985 350 3/5/1985 12/11/1985 281 3/14/1985 12/5/1985 266 1986 1/1/1986 12/31/1986 364 3/7/1986 12/20/1986 288 3/11/1986 12/13/1986 277 3/18/1986 12/4/1986 261 1987 1/1/1987 12/31/1987 364 3/6/1987 12/30/1987 299 3/7/1987 12/28/1987 296 3/8/1987 12/5/1987 272 1988 1/2/1988 12/31/1988 364 2/29/1988 12/16/1988 291 3/2/1988 12/15/1988 288 3/12/1988 12/9/1988 272 1989 1/1/1989 12/28/1989 361 3/6/1989 12/17/1989 286 3/9/1989 12/12/1989 278 3/12/1989 11/28/1989 261 1990 1/2/1990 12/31/1990 363 1/27/1990 12/29/1990 336 3/7/1990 12/22/1990 290 3/7/1990 12/2/1990 270 1991 1/1/1991 12/14/1991 347 2/25/1991 12/12/1991 290 2/22/1991 12/31/1991 312 3/11/1991 11/27/1991 261 1992 2/29/1992 12/31/1992 306 2/21/1992 12/24/1992 307 3/2/1992 12/13/1992 286 3/4/1992 12/9/1992 280 1993 1/1/1993 12/31/1993 364 2/12/1993 12/28/1993 319 3/5/1993 12/12/1993 282 3/8/1993 12/2/1993 269 1994 1/1/1994 12/31/1994 364 3/2/1994 12/30/1994 303 3/6/1994 12/29/1994 298 3/14/1994 12/8/1994 269 1995 1/1/1995 12/31/1995 364 3/6/1995 12/18/1995 287 2/23/1995 12/12/1995 292 3/11/1995 12/2/1995 266 1996 1/1/1996 12/31/1996 365 2/1/1996 12/18/1996 321 1/16/1996 12/18/1996 337 3/18/1996 11/30/1996 257 1997 1/1/1997 12/13/1997 346 2/23/1997 12/22/1997 302 2/27/1997 12/23/1997 299 3/10/1997 12/5/1997 270 Number of Years 35 35 35 35 Average Days 351 322 296 274 NOTE: Seasons have been affected by planned river lock closures for maintenance and construction This table last updated 12/08/98 by Monte P. Hines, P.E.. QUESTIONS - COMMENTS The providers of this service assume no liability and cannot guarantee the accuracy of all the information contained in the referenced Internet links. This page and associated sub-link pages have been developed to serve communication needs of the Navigation Industry, Corps of Engineers, Coast Guard, Other Agencies, Various Users, and Others concerned with Inland Rivers. Comments and suggestions on additional links, format changes, additional needed information, ... etc. are welcomed and can be sent to the POCs for this page: Technical: Send mail to thomas.w.lisco@usace.army.mil Content: Send mail to monte.p.hines@usace.army.mil (bio)