Laserfiche WebLink
<br />~~ <br /> <br />000357 <br /> <br />Survey monument movements greater than 2 inches would stop the reservoir draw down. <br />Additional data would be collected and evaluated to determine if the draw down could continue. <br /> <br />A review of reservoir operations from 1973 to present, shows that the end of day reservoir <br />elevations has not been lower than 7,140 ft since 1996. Table 1 shows the daily frequency of <br />reservoir elevation from 1973 to present between 7,102 ft. and 7,144 ft. <br /> <br />Small landslide movements are anticipated during the reservoir draw down and would have <br />minimal affect on downstream water quality if releases from Morrow Point Reservoir were <br />adjusted to allow sediment settling in Morrow Point and Crystal Reservoirs, <br /> <br />A sudden release of a large lands ide mass could increase sediments in Morrow Point Reservoir <br />and possibly downstream of Crystal Reservoir resulting in impacts to recreation and trout <br />spawning sites, Such an occurrence could also create a wave that could ovenop Morrow Point <br />Dam and pose a safety threat to persons on the reservoir and immediately below the dam. <br />However. chances of large. ,apid movements are considered to be very remote, <br /> <br />Fish and Wildlife Resources <br /> <br />The Gunnison River and its canyon walls suppon wildlife including beaver (CaslUr Canadensis). <br />mule deer (Odocoileus hemionus). ringtail cat (Bas,mriscus aSll/tus). great horned owl (Bubo <br />virginianus). western fence lizard (ScelopoTlls occidenta!i.l"). yellow warbler (Dendroica <br />petechia). rainbow trout (Oncorhmchus IIIvkiss) and brown trout (Salmo trutta) (NPS 2001), <br /> <br />The Colorado Division of Wildlife (CDOW) manages the !ishery resource of the Gunnison River <br />below Crystal Reservoir, This stretch of river has an excellent rainbow and brown trout fishery. <br />These populations are self-sustaining; however. whirling disease has greatly reduced recruitment <br />for rainbow trout. The CDOW conducts an annual fall (September) survey on the Gunnison <br />River below the Black Canyon of the Gunnison National Park. CDOW stocks Morrow Point <br />Reservoir with Kokanee (Ollcorhynchus nerkus) and Colorado River cutthroat trout <br />(Oncorhynclls clarki pleuriticlls), Entrainment from Blue Mesa Reservoir also providi:s a, <br />signi!icant number of !ish in Morrow Point Reservoir (Hebein. 200 I). <br /> <br />Fish species lists for both Crystal and Morrow Point Reservoirs are identical even though the <br />sources of species vary. These include Kokanee. Colorado River cutthroat trout. rainbow trout. <br />brown trout. brook trout (Salvelinllsfolllinalis). possibly Snake River cutthroat trout <br />(Oncorhynclls clarki sp.). Mackinaw or lake trout (Salve/inlls namacllsh). long nose sucker <br />(Catostomlls catostllnllls). white sucker (Catostomus commersoni). blue head sucker (Catostomlls <br />discobollls), longnose dace (Rhinichthys cararacwe), and mottled sculpin (CottllS bairdi), <br />Hybridized remnants of tlannelmouth sucker (Catostomus latipinnis) may also be present <br />(Mc.-\da 2000. Hebein 200 I), <br /> <br />13 <br />