Photograph of Plot 3 of 6, wheer ARS is studying the inundation tolerance of selected grass species. This plot was flooded two times during 1961 each for a duration of 20 days. Mr. Robert W. Graves, SCS, Rush Springs, Okla., is standing at the 5.0' depth. Work is under the supervision of Edd. D. Rhoades, Agricultural Engineer, ARS. Project is in response to SCS research needs. Flooding dates: 3/22/61 to 4/11/61 and 5/2/61 to 5/22/61.

Photograph of water impoundment plot No. 4 (one of six) used to study the inundation tolerance of selected grass species. This plot was flooded only one time during 1961 for a period of 20 days. Work is under the supervision of Edd D. Rhoades, Agricultural Engineer, ARWS-SWC. Project is in response to SCS research needs. Flooding date 5/1-5/21/61.

Photograph of the result of tree planting for critical area to stabilize the banks on the gully.

Photograph of two men surveying gully improvement project on Ionine watershed.

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

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

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

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 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 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 of water impounding Plot 2, 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 three times: (1) 3/20/61 to 3/31/61 (10 days); (2) 5/3/61 to 5/13/61 (10 days); and (3) 6/13/61 to 6/23/61 (10 days). No damage was observed after the first flooding; slight damage was noted after the second flooding and considerable damage was noted after the third flooding. This study is in response to SCS research needs. Work is under the supervision of Edd D. Rhoades, Agricultural Engineer, ARS-SCS.

Photograps of a close-up of KSU lowland switchgrass (in front of sign) in impoundment basin number 4 at a depth of 1.0 foot following two floodings for 10 days during early spring (3/22-4/1/62) and mid-spring (5/3-13/62). There was no apparent damages to the grass at this depth. For view of this grass when flooded for the same duration at a depth of 5.0 feet, see Ok-1760-5, datd 6/8/62. This research is under the supervision of Edd D. Rhoades, Agricultural Engineer, ARS-SWC.

Photograph of water impoundment Plot 6 (one of six). Photo shows (left to right) Mr. Sam D. Lowe, SCS Work Unit Conservationist, Pauls Valley, Oklahoma; Mr. Luther Nunley, SCS Work Unit Conservationist, Chickasha, Oklahoma; and Mr. Willis Milton, SCS Work Unit Conservationist, Sulpher, Oklahoma. This plot was flooded two times during 1961, each for a duration of 5 days. Work is under the supersision of Edd D. Rhoades, Agricultural Engineer, ARS. Project is in response to SCS research needs. Flooding dates. 4/30/61 to 5/4/61 and 6/12/61 to 6/17/61.

Photograph of west side of water impoundment Plot No. 6 previously flooded two times for 5 days each as follows: (1) 3/30/61 to 5/5/61 and (2) 6/12/61 to 6/1317/61. Minor 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 west side of impounding Plot No. 1, previously flooded three times for 5 days each, as follows: (1) 3/21/61 to 3/26/61; (2) 5/4/61 to 5/9/61 and (3) 6/14/61 to 6/19/61. Only minor damage to the 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 a view of water impounding Plot 3 as seen from the top of the lower dyke. This plot has been flooded two times previously for 20 days from 3/22/61 to 4/11/61 and again from 5/2/61 to 5/22/61. None to slight damages were noted from the first flooding; however, severe damages and loss of grasses resulted form the second flooding. Water depth vaired from in excess of 6.0' in the foreground to zero in the background. This study is in response to SCS research needs. Work is under the supervision of Edd D. Rhoades, Agricultural Engineer, ARS-SWC.

Photograph of a close-up view of the right side of water impounding Plot 2 as seen from the lower end. This plot has been flooded two times previously for 10 days, from 3/21 to 3/31/61 and again from 5/3-13/61. No damages were noted from the first flooding; however, considerable damages were observed as a result of 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.