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Section 785.19 (d) Continued. <br />I ~ (iii) Characteristics supporting the function of regulating the flow of <br />water which include, but are not limited to-- <br />(A) The geometry and physical character of the valley, expressed in <br />terms of the longitudinal profile and slope of the valley and the chan- <br />nel, the sinuosity of the channel, the cross section, elopes and propor- <br />tions of the channels, flood plains and low terraces, the nature and <br />stability of the stream banks and the vegetation established in the <br />channels and along the stream banks and flood plains; <br />(B) The nature of surface flows as shown by the frequency and duration <br />of flows of representative magnitude including low flows and floods; and <br />(C) The nature of interchange of water between streams, their associ- <br />ated alluvial aquifers and any bedrock aquifers as shown by the rate and <br />amount of water supplied by the stream to associated alluvial and bed- <br />• rock aquifers (i.e., recharge) and by the rates and amounts of water <br />supplied by aquifers to the stream (i.e., baseflow); <br />(iv} Characteristics which make water available and which include, but <br />are not limited to-- <br />(A) The presence of land forms including flood plains and terraces <br />suitable for agricultural activities; <br />General <br />The field investigation of the general area described in Section <br />785. 19 (c) resulted in the identification of three subject areas <br />which are probably alluvial valley floors. These areas, shown on <br />Map 5, North Park Hydrology, are 1) the Illinois River flood- <br />plain, which receives drainage from the Kerr Tipple Area, 2) the <br />Canadian River floodplain, which receives intermittent drainage <br />• from the mine plan area, and 3) the lower reach of Bolton Draw, <br />785-32 <br />