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r 1996 Paris River Native Fish Monitoring Introduction Use of the Paris River, Arizona, by spawning flannelmouth sucker (Catostomus latipinnis) has been well documented. Suttkus and Clemmer (1976), Carothers and Hinckley (1981), Maddux et al. (1987) and Thieme (i>'i preparation) reported ripe flannehnouth suckers near the confluence of the Paris and Colorado Rivers, and spawning in the Para River. Weiss (I993) reported flannelmouth sucker spawning activity and young-of--year (YOY) in the lower 10 kilometers (km) of the Paris River. Sampling by Arizona Game and Fish Department (AGED) ~ during 13 May and 15 June 1994 resulted in 441arval flannelmouth suckers caught, verifying successful spawning. On 15 June 1994, 297 juvenile flannelmouth suckers were captured, ranging in length from 30 - 50 mm total length (TL). In 1996, AGED, in conjunction with the University of Arizona, continued to monitor use of the Paris River by native fishes. Study Site Ten standardized AGED sites in the Paris River were sampled in the lower 4.8 lan of the Paris River (Table 1; Figure 1). Of these, nine were classified as runs (Bisson et al. 1982). Site 10, located at the confluence of the Paris and Colorado Rivers, was classified as pool habitat. Locations of sampling sites aze noted as river kilometer (RK) upstream from the mouth. Table 1. Site, river kilometer and description of sampling locations in the Paris River, Arizona, 1996. ~ _Site River Kilometer Description 1 4.8 "Devil's Diving Board" 2 4.2 0.6 km downstream from "Devil's Diving Board" 3 3.2 0.3 km upstream from Site 4 4 2.9 Near abandoned ranch/corral site 5 2.4 ~ 35 m upstream from old water pump 6 1.9 USGS gauging station 7 1.6 Bedrock site, _ 0.3 km upstream from Site 8 8 i.3 ~ 90 m upstream from water pipeline 9 0.8 Bridge 10 0.0 Mouth of Paris River • Browder and Hoffnagle, 1996 Armual Report Arizona Game & Fish Department 1