From abstract: The existing locks at Locks and Dam No. 1 were constructed between 1929 and 1932. Problems have been experienced with accumulation of ice and debris at the intakes, air entrapment in the culverts of the filling and emptying system, excessive turbulence in the lock chamber during filling, and hazardous conditions downstream from the locks during emptying operations.

During the months of August and September, 1979, geoMetrics, Inc. collected 12,415 line miles of high sensitivity airborne radiometric and magnetic data in adjoining portions of South Dakota and Minnesota over seven 1 by 2 degree NTMS quadrangles (Thief River Falls, Grand Forks, Fargo, Milbank, Watertown, New Ulm, and St. Cloud). All radiometric and magnetic data were fully corrected and interpreted and are presented as eight volumes.

This report discusses aeromagnetic data that was obtained from uranium anomalies discovered in the Fargo quadrangle of Minnesota and North Dakota.

This report discusses aeromagnetic data that was obtained from uranium anomalies discovered in the Grand Forks quadrangle of Minnesota and North Dakota.

This report discusses aeromagnetic data that was obtained from uranium anomalies discovered in the Milbank quadrangle of South Dakota, North Dakota, and Minnesota.

This report discusses aeromagnetic data that was obtained from uranium anomalies discovered in the New Ulm quadrangle of Minnesota.

This report discusses aeromagnetic data that was obtained from uranium anomalies discovered in the Saint Cloud quadrangle of Minnesota.

This report discusses aeromagnetic data that was obtained from uranium anomalies discovered in the River Falls quadrangle of Minnesota and North Dakota.

This report discusses aeromagnetic data that was obtained from uranium anomalies discovered in the Watertown quadrangle of South Dakota and Minnesota.

Average record data listings taken during aerial gamma-ray and magnetic surveys of the Fargo Quadrangle in Minnesota and North Dakota.

Single record data listings taken during aerial gamma-ray and magnetic surveys of the Fargo Quadrangle in Minnesota and North Dakota.

Average record data listings taken during aerial gamma-ray and magnetic surveys of the Grand Forks Quadrangle in Minnesota and North Dakota.

Single record data listings taken during aerial gamma-ray and magnetic surveys of the Grand Forks Quadrangle in Minnesota and North Dakota.

Average record data listings taken during aerial gamma-ray and magnetic surveys of the Milbank Quadrangle in the southwest Minnesota area.

Single record data listings taken during aerial gamma-ray and magnetic surveys of the Milbank Quadrangle in the southwest Minnesota area.

Average record data listings taken during aerial gamma-ray and magnetic surveys of the New Ulm Quadrangle in Minnesota.

Single record data listings taken during aerial gamma-ray and magnetic surveys of the New Ulm Quadrangle in Minnesota.

Average record data listings taken during aerial gamma-ray and magnetic surveys of the St. Cloud Quadrangle in Minnesota.

Single record data listings taken during aerial gamma-ray and magnetic surveys of the St. Cloud Quadrangle in Minnesota.

Average record data listings taken during aerial gamma-ray and magnetic surveys of the Thief River Falls Quadrangle in Minnesota and North Dakota.

Single record data listings taken during aerial gamma-ray and magnetic surveys of the Thief River Falls Quadrangle in Minnesota and North Dakota.

Average record data listings taken during aerial gamma-ray and magnetic surveys of the Watertown Quadrangle in South Dakota and Minnesota.

Single record data listings taken during aerial gamma-ray and magnetic surveys of the Watertown Quadrangle in South Dakota and Minnesota.

First volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of four quadrangles in Wisconsin, Minnesota, and Michigan including documentation about data collection and analysis.