Photograph of the principal spillway, Site # 26, Cavalry Creek. View of the permanent pool area afte the water has drawn down from the flood after an 8 inch rain occurred above this site on August 19, 1961. OK-1438-11.

Photograph of grassed channel, Site 29, Cavalry Watershed above this channel has approximately 117 acre-feet of water stored from an 8 inch rain that fell on Aug. 19, 1961. Water is being discharged slowly through the outfall pipe into the grassed channel of midland Bermuda grass, below. The grassed channel provides good drainage at all times and there is no scour or sediment drainage. OK-1438-2.

Photograph of pier discharge. A view of alfalfa fields below Site 26 while the pipe is discharging. The structure above the field has a large storage of water because of 8 inches of rain that occurred on August 19, 1961. OK-1438-5.

Photograph of flood storage. Flood storage in Site # 25, Calvary Watershed. This site has a drainage area of 640 acres, 158 acre-feet of floodwater storage and 18 inches outfall pipe. An 8 inch rain occurred above this site on the morning of August 19, 1961. The storage water level was approximately 3 feet below emergency spillway crest. No flooding or scouring occurred below this site. OK-1438-10.

Photograph of pipe discharge. View of alfalfa field below Site 26, Calvary watershed after flood storage had discharged through this field 8 days following an 8 inch rain above this site on the morning of August 19, 1961. This field and other fileds downstream have been protected from scour and siltation. OK-1438-12.

Photograph of a pasture of Midland Bermudagrass above Site 27, Cavalry Watershed. The back of the photograph proclaims, "Midland Bermuda Grass pasture above Site 27, Cavalry Watershed. Grass grows well up to the water line and eliminates and boggy problems."