Photograph of an aerial shot of a diversion terrace for Site 6 Mill Creek and the surrounding area. A farmstead with several buildings is located in the bottom part of the photograph. The back of the photograph proclaims, “Watershed: Ok-SCD-20 Wa. #5. Site #6. Type of structure: Diversion terrace for Site #6. Drainage area: 155 acres (90 acres in pasture, 65 acres in cropland). General condition of drainage area: Severely eroded, gully & sheet. Acres of bottomland protected: 90 acres (Protects bottomland & Detention Reservoir #1 from silt).”

Photograph of Lehmenn lovegrass drilled spring of 1947 for seed production. Not harvested. Now thick cover of old an dnew growth on the ground. TX-44-387.

Photograph of an aerial shot of Site #6 Mill Creek Watershed #12 and surrounding area. A house and a couple of buildings are near the top left center of photograph. The back of the photograph proclaims, "Watershed: Ok-SCD-20, Wa. #12, Site #6. Type of structure: Drop Inlet. Drainage area: 60 acres (52 acres in cultivation, 8 acres in pasture). General condition of drainage area: Terraced with inadequate outlets. 15 acres of bottomland protected. Stabilized terraces outlet & protects bottomland from silt."

Photograph of an aerial shot of Site #3 Mill Creek Drop Inlet and the surrounding area. The photograph also shows Site #2 Mill Creek Drop Inlet on Adolph Johnson farm on the right edge of photograph. The back of the photograph proclaims, "Watershed: Ok-SCD-20 Wa. #5, Site #3. Type of structure: Drop inlet. Drainage area: 160 acres. Soil units: Deep medium textured slowly permeable and permeable. Area in cultivation: 32 acres. Area in pasture: 12 acres. Area in abandoned cropland: 116 acres. General condition of drainage area: Poor cover, sheet and gully erosion. Note: Right edge shows Site #2 on Adolph Johnson farm. Type of structure: Drop inlet. Drainage area – 15 acres (4 acres in pasture, 11 acres in abandoned cropland). General condition of drainage area: Poor cover, serious gully & sheet erosion. It protects detention reservoir #1 & bottomland from silt. See pipe installed in third gully from right edge."

Photograph of an aerial shot of Mill Creek Site 1 Drop Inlet and the surrounding area. The back of the photograph proclaims, "Watershed: Ok-SCD-20 Wa. #5. Site #1. Type of structure: Drop Inlet. Drainage area: 57 acres. Soul units: Deep medium textured slowly permeable & permeable soils. All in pasture. General condition: Good cover but large active gullies. Protects Detention Reservoir, Site #1 and bottomland from silt."

Photograph of watershed: OK-SCD-20 Wa. #5, site #7. Drop inlet, type of structure. Drainage area: 74 acres (25 acres in pasture, 49 acres abandoned cropland). General conditions: gullied. Drop inlet under construction when photo shot. Protects detention reservoir #1 and bottomland from silt.

Photograph of an aerial shot of Mill Creek Site 1 Drop Inlet and the surrounding area. The back of the photograph proclaims, “Watershed: Ok-SCD-20 Wa. #5. Site #1. Type of structure: Drop Inlet. Drainage area: 57 acres. Soul units: Deep medium textured slowly permeable & permeable soils. All in pasture. General condition: Good cover but large active gullies. Protects Detention Reservoir, Site #1 and bottomland from silt.”

Photograph of an aerial shot of Site #6 Mill Creek Watershed #12 and surrounding area. A house and a couple of buildings are near the lower left of photograph. The back of the photograph proclaims, "Watershed: Ok-SCD-20, Wa #12, Site #1. Type of structure: Detention Reservoir. Drainage Area: 1440 acres (in pasture). Soil Units: Deep fine textured, slowly permeable soils. Condition of drainage area: 68% good native grass range, 32% fair native grass range. Peak flow: 2740 c.f.s. Release Rate: 35 c.f.s. Acres of bottomland protected: 160 acres immediately below in addition to part of system benefit on Mill Cree [sic]. Detention Reservoir located in hill pasture above flood plain."

Photograph of an aerial shot of Site #6 Mill Creek and surrounding area. The back of the photograph proclaims, "Watershed: Ok-SCD-20, Wa #5, Site 6. Type of structure: Drop Inlet. Drainage area: 310 acres (160 acres in pasture, 150 acres in abandoned cropland). General condition: Poor cover, severely gullied. Area of bottomland protected: 90 acres. Protects bottomland & Detention Reservoir #1 from silt."

Photograph of an aerial shot of Site #2 Mill Creek detention reservoir and the surrounding area. The back of the photograph proclaims, "Watershed: Ok-SCD-20 Wa. #5, Site #2. Type of structure: Detention Reservoir. Drainage area: 265 acres (all in pasture). Condition: Good and fair native grass range. Permanent storage: 0.72". Peak flow: 460 c.f.s. Release rate: 12 c.f.s. Flood storage: 3.63". Acres of bottomland protected: 40 acres immediately below in addition to system to protect Mill Creek."

Photograph of an aerial shot of Upper Mill Creek Watershed and the surrounding area. The back of the photograph proclaims, "Upper Mill Creek Watershed, OK-SCD-2WA-13. Structure: Flood Water Diversion (Under construction, 90% complete). Drainage area: 250 Acres. Silts above structure: 7 –GP. Soils protected by structure: 4 –GP. Area above structure: Pasture – poor condition. Drains directly into the channel of Mill Creek. Protects approximately 100 acres of bottom cropland from overhead flooding."