Pre-Dam - 1953
After Completion of Gavins
Point Dam - 1956
Build-up of Sediment Evident After only 17 years - 1976
The Sediment Build-Up Continues - 1993
| Sediment Illustrated | Home |
| The first photo shows the Springfield, SD - Santee, NE area pre-dam, the second in 1956 illustrates the area following completion of the Gavins Point Dam near Yankton, SD, the third in 1973 shows the accumulation of sediment after only 17 years and the fourth photo in 1993 shows the further clogging of the lake with sediment as the visual delta extends far past Springfield and Santee. |
Pre-Dam - 1953 |
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Build-up of Sediment Evident After only 17 years - 1976 |
The Sediment Build-Up Continues - 1993 |