| Area | Middle Trinity |
| Topic | Tour: Hamilton Ponds on Lower Grass Valley Cr. |
Hamilton Ponds on lower Grass Valley Creek trap fine sediment before it is transported into the Trinity River. This photo was taken from the air and shows some build up of decomposed granite sands in the upper pond in the picture. 6/16/92. Photos courtesy of the Bureau of Reclamation.
Upper Hamilton Pond serves as the first catchment for storage of Grass Valley Creek sand. 8/89. Photo courtesy of the Bureau of Reclamation.
Lower Hamilton Pond. 8/89. Photo courtesy of the Bureau of Reclamation.
Middle Hamilton Pond. 8/89. Photo courtesy of the Bureau of Reclamation.
Middle Hamilton Pond during winter in November 1989 after sediment has been dredged to regain storage capacity. Photo courtesy of the Bureau of Reclamation.
Grass Valley Creek spills between two of the Hamilton Ponds. 11/89. Photo courtesy of the Bureau of Reclamation.
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