Photograph of Luther Nunley in field showing Stubble mulching, after wheat grown on Class Ii-soil Unit 7 Land.

Photograph of Ionine Creek, an aerial view of a critical silt source area. This huge gully has been treated vegetative, and a structure is to be built on the lower end. Fields were planted to native grasses and tree plantings made in 1957.

Photograph of flood prevention, Washita River, Ionine Creek. Critical silt source area. View looking up gully to the north. Vegatative work has been done, Structural works are just starting.

Photograph of watershed site 22, Rush Creek. Follow-up of OK-1240-6; just after completion of structure.

Photograph of watershed site 22, Rush Creek. Follow-up of OK-1240-6; just after completion of structure. Lake is now full. Excellent stand of bermuda grass in spillway area and on dam. Also used for stockwater.

Photograph of water impounding Plot 5, one of six being used to study water inumdation tolerance of selected species of grasses associated with flooded areas above floodwater retarding structures. Viewed from top of embankment at lower end of plot. Edd D. Rhoades shown standing at the 5 foot depth location. This plot has been flooded two times; 4/30/61 to 5/10/61 (10 days) and 6/12/61 to 6/22/61 (10 days). Slight damage was noted after the first flooding and considerable damage was noted after the second flooding. This study is in response to SCS research needs. Work is under the supervision of Edd D. Rhoades, Agricultural Engineer, ARS-SCS.

Photograph of a close-up of KSU lowland switchgrass (in front of sign) in impound basin number 4 at a depth of 5.0 feet following two floodings for 10 days during early spring (3/22-4/1/62) and mid-spring (5/3/62). Ther was a slight suppression of growth, however, there was no killing of any part of the grass at this depth. For view of this grass when flooded at the same duratio at a depth of 1.0 foot, see OK-1760-6 dated 6/8/62. This research is under the supervision of Edd D. Rhoades, Agricultural Engineer, ARS-SWC.

Photograph of buffalo grass (in front of sign) in impoundment basin number 6 at a depth of 5.0 feet following two floodings for 20 days during early spring (3/21-4/10/62 and mid-spring (5/2-22/62). Severe suppression of growth with approximately 75 percent of top grwoth killed during mid-spring flooding. All grass at this depth had recovered well at date o photograph. For view of this grass when flooded at same time, except for a depth of 1.0 foot, see Ok-1760-4, dated 6/8/62. This research is under the supervision of Edd D. Rhoades, Agricultural Engineer, ARS-SWC.

Photograph of Mr. E.H. Rhoades, left, Agricultural Engineer, ARS-SCS, discusses with SCS Agronomist M.D. Gamble, the establishment of 24 selected species of grasses and legumes related to watershed treatment. Reddish Prairie, virgin rangeland, Noble loam, slope 7%, erosion 1, Class IV. Work is under the supervison of Mr. Rhoades. Work in response to SCS research needs.

Photograph of prarrie cordgrass (first grass in front of sign) vine Mesquite (second grass in front of sign) and alkali sacaton (foreground) in impoundment basin number 4 at a depth of 1.0 foot following two floodings of 10 days during early spring (3/22-4/1/62) and mid-spring (5/3-13/62). There was no evidence of damage to any of the grasses, except a very slight suppression of growth. For a view of this grass when flooded at same time, except at a depth of 5.0 feet, see Ok-1760-7, dated 6/8/62. This research is under the supervision of Edd D. Rhoads, Agricultural Engineer, ARS-SWC.

Photograph of prarrie cordgrass (in front of sign) in impoundment basin number 6 at a depth of 5.0 feet following two floodings of 20 days during early spring (3/21-4/10/62) and mid-spring 5/2-22/62). Note the severe suppression of growth. For a view of this grass when flooded at same time, except at a depth of 1.0 foot, see Ok-1760-2, dated 6/6/62. Grass in foregound is vine mesquite, which was only slightly damaged from the foregoing inumdation. This research is under the supervision of Edd D. Rhoads, Agricultural Engineer, ARS-SWC.

Photograph of inundation impoundment basin number 3, showing damages to grass due to a mid-spring flooding for 10 days (May 2-12, 1962). Work is being conducted by Edd D. Rhoades, Agricultural Engineer, ARS, in response to SCS research needs.

Photograph of inundation of impoundment basin number 5, showing damages to grass due to an early-spring (Mar, 23-28) flooding of 5 days and a mid-spring (May 5-10) flooding of 5 days. . Work is being conducted by Edd D. Rhoades, Agricultural Engineer, ARS, in response to SCS research needs.

Photograph of inundation of impoundment basin number 6, showing the complete killing of KSU lowland switchgrass following an early-spring (Mar. 21-Apr 10) flooding of 20 days and a mid-spring (May 2-22) flooding of 20 days at a depth of 5 feet. Work is being conducted by Edd D. Rhoades, Agricultural Engineer, ARS, in response to SCS research needs.

Photograph of inundation of impoundment basin number 6, showing very little damags to KSU lowland switchgrass following an early-spring (Mar. 21-Apr 10) flooding of 20 days and a mid-spring (May 2-22) flooding of 20 days at a depth of 1.0 foot. Work is being conducted by Edd D. Rhoades, Agricultural Engineer, ARS, in response to SCS research needs.

Photograph of of weeping lovegrass in impoundment basin number 4 with sign at a depth of 0.5 foot, following two floodings of 10 days, during early spring (3/22-4/1/62) and mid-spring (5/3-5/13/62). Note that all grass to the right of the sign (less than 0.5 foot depth) survived and all grass to the left was killed. This research is under the supervision of Edd D. Rhoads, Agricultural Engineer, ARS-SWC.

Photograph of west side of water impoundment Plot No. 2 previously flooded three times for 10 days each as follows: (1) 3/21/61 to 3/31/61; (2) 5/3/61 to 5/13/61; (3) 6/13/61 to 6/23/61. Considerable damage to grasses resulted from these inundation periods. This study is in response to SCS research needs. Work is under the supervision of Edd D. Rhoades, Agricultural Engineer, ARS-SWC.

Photograph of water impounding Plot No. 6, one of six, used to study inundation tolerance of selected species of grasses associated with flooded areas above floodwater retarding structures. Viewed from top of embankment at lower end of plot. Edd D. Rhoades is shown standing at the five foot depth location. This plot has been flooded two times, 4/30/61 to 6/12/61 and 6/12/61 to 6/17/61. No damage was observed after the first flooding and only slight damages were noted after the second flooding. This study is in response to SCS research needs. Work is under the supervision of Edd D. Rhoades, Agricultural Engineer, ARS-SWC.

Photograph of water impounding plot constructed by ARS-SWC to study inundation tolerance of selected species of plants associated with watershed treatment (floodwater retarding structures). Water will be 5 feet deep at lower end of plot. Six plots are planned for the study. Reddish Prairie, virgin rangel and Noble Loam, slope 7%, erosion 1, Class LV. This study is in response to SCS research needs. Work is under the supervision of Edd D. Rhoades, Agricultural Engineer, ARS-SWC.

Photograph of west side of water impounding Plot 5, previously flooded ftwo times for 10 days each, as follows: (1) 4/30/61 to 5/10/61 and (2) 6/12/61 to 6/22/61. Considerable damage to grasses resulted from these inundation periods. This study is in response to SCS research needs. Work is under the supervision of Edd D. Rhoades, Agricultural Engineer, ARS-SWC.

Photograph six of six of Chickasha Lake. An inundation study by the Agricultural Experiment Station-Soil and Water Conservation Bureau [AES-SWC], in Chickasha, Oklahoma, under the direction of Edd D. Rhoades. Basin no. 6, following one flooding period of twenty days (May 4 - 24, 1964). See OK-2334-3, dated 07-08-64, for list of grasses. Severe killing of big blestem, knotroot, bristlegrass, smoothbrome, western wheatgrass, read canary grass, Virginia wildry, and Kentucky fescue occured below a 4 foot depth during this period. OK-2134-8.

Photograph five of six of Chickasha Lake. An inundation study by the Agricultural Experiment Station-Soil and Water Conservation Bureau [AES-SWC], in Chickasha, Oklahoma, under the direction of Edd D. Rhoades. Basin no. 5, following 2 periods of flooding for 20 days each (March 23 - April 12 and May 5 - 25 , 1964). See OK-2134-3, dated 07/08/64 for the list of grasses [i.e., prior photo--2019.061.B2.03454; photo 1 of 6]. Very little damage occured during the March 23 - April 12 period. Severe killing of big bluestem, knotroot bristlegrass, smoothbrome, western wheatgrass, reed canary grass, Virginia wildrye and Kentucky fescue occured below 4 foot depth during the May 5 - 25 period. OK-2134-7.

Photograph four of six of Chickasha Lake. An inundation study by the Agricultural Experiment Station-Soil and Water Conservation Bureau [AES-SWC], in Chickasha, Oklahoma, under the direction of Edd D. Rhoades. Basin no. 4, following 2 periods of flooding for 10 days each (May 4 - 14 and June 9 - 19, 1964). See OK-2134-3, dated 07/08/64 for the list of grasses [i.e., photo--2019.061.B2.03454; photo 1 of 6]. Moderate suppression of growth with partial killing of a few plants below the 4.0 depth during the May 4 - 14 flooding: big bluestem, Indian grass, knotroot bristle grass, smoothbrome, western wheat grass, reed canary grass, Virginia wildrye and Kentucky fescue. Severe killing of big bluestem, Indian grass, smoothbrome, prairie cord grass, western wheat grass, reed canary grass, Virginia wildrye and Kentucky fescue. occurred below the 4 foot depth during the June 9 - 19 flooding. OK-2134-6.

Photograph of a closeup of KR bluestem in impoundment basin number 4 at a depth of 0.5 foot, following two floodings of 10 days, during early spring (3/22-4/1/62) and mid-spring (5/3-13/62). Note that all grass to the right of the middle board (excess of 0.5 foot depth) was killed and that all grass to the left of the middle of the board (less than 0.5 foot depth) survived. This research is under the supervision of Edd D. Rhoades, Agricultural Engineer, ARS-SWC.