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008171109s1983    onca|||fo    f000 0 eng d
040 |aCaOODSP|beng
041 |aeng|bfre
043 |an-cn-on
0452 |b1980|b1982
0861 |aEn13-5/84-02E-PDF
1001 |aWong, J.
24510|aIce freeze-up and breakup observations in the Upper Grand River |h[electronic resource] : |b1980-81 and 1981-82 observations / |cby J. Wong and S. Beltaos.
260 |a[Burlington, Ont.] : |bEnvironmental Hydraulics Section, Hydraulics Division, National Water Research Institute,|c1983.
300 |aiii, 24, [28] p. : |bill.
4901 |a[NWRI contribution] ; |v84-2
500 |aCover title.
500 |a"May 1983".
500 |aSeries number supplied by publisher.
500 |aDigitized edition from print [produced by Environment and Climate Change Canada].
504 |aIncludes bibliographical references.
5203 |a"The first two years‘ ice observations on the Upper Grand River are described and interpreted. Flooding was experienced during both the 1980-81 and 1981-82 breakup seasons and was caused by major ice jams..Breakup initiation data for the Marsville and Upper Belwood gauge sites are consistent with earlier findings on other rivers. This was not the case for west Montrose. A possible cause of this discrepancy is the local formation and behaviour of slush jams during freeze up. Potential peak breakup stages, as predicted by the theory of equilibrium floating jams. were not exceeded by any of the four major jams that were documented. This is in agreement with expectation since three of these jams did not attain equilibrium and the fourth appeared to be associated with overestimated flow discharge"--Abstract, p. i.
546 |aIncludes abstracts in French.
69207|2gccst|aHydrology
69207|2gccst|aIce
7101 |aCanada. |bEnvironment Canada.
7102 |aNational Water Research Institute (Canada)
830#0|aNWRI contribution ;|vno. 84-2|w(CaOODSP)9.844121
85640|qPDF|s4.54 MB|uhttps://publications.gc.ca/collections/collection_2017/eccc/En13-5-84-02-eng.pdf