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• <br />2.04.7 Hydrology Description <br />Generally, seasonal variations in stream discharge shows peak rates in late <br />spring and early summer (April-July). Low flows begin in October and end in <br />March. Daily peak flows are typically around 12 midnight and low flows are <br />around 12 noon, due to snowmelt. <br />(b) (ii) (A through G) <br />Water quality data identifying <br />section and Volume III, Tab 3. <br />seasonal variations are presented in this <br />Generally, seasonal variations in water quality are functions of flow rates. <br />Total suspended solids and flow peaks coincide due to the erosional nature of <br />run-off due to snow melt events. <br />• <br />Total dissolved solids and electro-conductivity diminish as functions of <br />peak flows due to the diluting effect of run-off events. The pH values or <br />acidity of surface waters usually remain stable during peak flows and <br />either increase during low flow due to increased concentrations of caliche <br />derived soluble material, or decrease due to higher concentrations of <br />humic material, depending upon vegetation influences on the drainage <br />basin. <br />Permit Application <br />2.04-32 06/08