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Section 785.19 (c) Continued. <br />C~ <br />reddish-green color of the floodplain indicates that there is <br />sufficient soil moisture to maintain photosynthesis. The red areas <br />are dominated by herbaceous vegetation and the greenish-red areas <br />by both herbaceous plants and shrubs. The soil moisture ie moat <br />likely supplied by water from Bolton ditch, which is no"t visible on <br />the photograph. Bolton Ditch receives return flow water from <br />another ditch that diverts water from the Michigan River. The <br />reflectance of the floodplain indicates that Bolton Draw is flood <br />irrigated. <br /> <br />I • <br />The fourth subject area is Bush Draw. It is the drainage on the <br />far right of photograph 359 which extends from the bottom of the <br />photograph to the Canadian River. Bush Draw flows north and emp- <br />ties into the Canadian River. Some redness is visible in the <br />streambed along most of the drainage indicating that soil moisture <br />is adequate to sustain at least some plant life. Along the lower <br />2J3 of the drainage there is no red reflectance adjacent to the <br />channel and that which is within the channel is very faint but can <br />be detected with 2x magnification. Approximately two inches from <br />the bottom of the photograph there is a small reservoir in the <br />channel. Down stream and in the immediate vicinity of the reser- <br />voir redness is readily apparent. It is reasonable to expect that <br />the pond provides a constant recharge of moisture to the soil <br />resulting in the herbaceous plant cover. There is no other water <br />source apparent other than the reservoir. The white areas located <br />about halfway between the Canadian River and the bottom of the <br />photograph are flat areas exhibiting a low plant cover and large <br />bare ground interspace. Plants appear as bluish spots when viewed <br />with an 8x lens. Plant cover increases upstream which gives a <br />blue-white mottled appearance visible to the unaided eye. In <br />summary, Bush Draw is relatively dry with little sub-irrigation <br />water available for plant growth. Recharging of soil moisture <br />takes place for a short distance below the reservoir located near <br />the bottom of the photograph. <br />785-25 <br />