Residual shear strength mobilized in Red River slope failures

Mesri, Gholamreza
Huvaj Sarıhan, Nejan
The Red River, which separates Grand Forks, North Dakota, from East Grand Forks, Minnesota,floods its banks in the spring or early summer as a result of spring rains and snow melt. To assess thestability of Red River slopes and to evaluate alternative flood control measures, the St. Paul District of theUnited States Army Corps of Engineers and the City of Grand Forks have conducted detailed subsurface investigationsand field observations, including sampling and laboratory testing, and field measurements ofgroundwater levels and ground movements. Slope stability analyses were carried out for six locations toevaluate the residual shear strength mobilized for reactivated and first-time slope movements. The backcalculatedresidual friction angles for the Lake Agassiz Brenna clay, with a liquidity index in the range of 0.3to 0.6, are consistent with those from laboratory tests, and from empirical correlations for stiff clays andshales.
9th International Symposium on Landslides (9th ISL) (2004)


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Citation Formats
G. Mesri and N. Huvaj Sarıhan, “Residual shear strength mobilized in Red River slope failures,” Rio De Janeiro, Brezilya, 2004, vol. 2, p. 925, Accessed: 00, 2021. [Online]. Available: