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<br />Paris River Fish Monitoring Annual Report <br />Table 5. Number of the sampled sites in which each sediment type was the primary or <br />secondary sediment during each Arizona Game and Fish Department Paris River fish monitoring <br />trip, 1998. ' <br />Sediment Type <br />Trip T Clay Silt Sand Gravel Pebble Cobble Boulder Bedrock <br />June 0 l0 11 1 0 0 0 0 <br />July 0 7 10 2 0 1 0 0 <br />~ August 2 6 9 4 2 0 0 1 <br />September 2 7 10 3 2 0 0 0 <br />October 3 6 9 5 0 1 0 0 <br />November 2 7 10 2 1 1 0 1 <br />December 2 5 10 5 1 1 0 0 <br />discharge also affects depth due to scouring and agradation of sites. Spring floods tend to be of <br />lower volume and carry less sediment per volume of water than monsoon floods (Topping 1997). <br />Mean representative and maximum depth of the sampling sites was greatest in June (Trip 98-1), <br />following the spring floods. Conversely, the large monsoon flood in September changed the <br />course of the stream in several sites and deposited loose sand in areas where there had been deep <br />scour holes along bedrock banks. <br />Sediment Characteristics <br />~ Sediment in the Paris River is primarily sand and silt (Table 5}. In the ponded mouth, <br />the sediment is primarily silt with clay and sand as secondary sediment types. Coarser sediment <br />types, such as gravel and pebble sediments, tend to be found after flood events scour the finer <br />sediments. The fine sediments retum soon afterwards, with the return of lower flows. <br />Six species offish were captured during seven sampling trips in 1998 (Table 6). Three <br />native species were captured: the common flannelmouth sucker and speckled dace, and <br />• <br />Hoffmgle 1999, Paris River 1998 Atmual Report Arizona Game & Fish Depaztuient 9 <br />