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Last modified
7/14/2009 5:02:35 PM
Creation date
5/18/2009 12:34:22 AM
Metadata
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UCREFRP
UCREFRP Catalog Number
9420
Author
Maddux, H. R., J. A. Mizzi, S. J. Werdon and L. A. Fitzpatrick.
Title
Overview of the Proposed Critical Habitat for the Endangered and Threatened fishes of the Virgin River Basin.
USFW Year
1995.
USFW - Doc Type
Salt Lake City.
Copyright Material
NO
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historic distribution (Rinne 1971, Cross 1975, Valdez et al. 1991, Addley and Hardy 1993). <br />Over the last 50 years there has been a decline in the range of the species. The present <br />distribution of the Virgin spinedace is substantially smaller than its former range with <br />approximately 37-40 percent (83 km, 52 mi) of its habitat lost due to human impacts (Valdez <br />et al. 1991, Addley and Hardy 1993). Stream reaches that historically contained spinedace, <br />but are now dewatered, include portions of the East Fork of Beaver Dam Wash, the Santa <br />Clara River downstream Gunlock Reservoir, Mogatsu Creek, Ash Creek near Toquerville, <br />Leeds Creek, and the mainstem Virgin River between Quail Creek Diversion and Pah Tempe <br />Springs. Current distribution of the spinedace includes portions of the mainstem Virgin <br />River and eleven of its tributaries and subtributaries including the East Fork Virgin River, <br />Shunes Creek, North Fork Virgin River, North Creek, LaVerkin Creek, Ash Creek, Santa <br />Clara River, Beaver Dam Wash, Coal Pits Wash, Moody Wash, and Mogatsu Creek. <br />Previous Federal Actions <br />The woundfm was listed as endangered on October 13, 1970 (35 FR 16047). A Woundfin <br />Recovery Plan was originally prepared in July 1979, then revised on March 1, 1984. On <br />November 2, 1977, the Service proposed critical habitat for the woundfin (42 FR 57329), but <br />on March 6, 1979 the proposal was withdrawn (44 FR 12382) due to the changed <br />requirements in the 1978 amendments to the Endangered Species Act which required <br />proposals that have not been finalized within two years to be withdrawn. On July 24, 1985 <br />the- Service ruled that it would reintroduce woundfin into the Gila River drainage in Arizona <br />and determined this population to be "nonessential experimental" according to section 10(j) <br />of the Act (50 FR 30188). <br />On August 23, 1978 the Service proposed to determine the Virgin River chub to be an <br />endangered species and to identify critical habitat (43 FR 37668). However, this proposal <br />was withdrawn on September 30, 1980 (45 FR 64853) due to the changed requirements in <br />the 1978 amendments to the Act. The Virgin River chub was listed as endangered on August <br />24, 19$9 (54 FR 35305). Critical habitat was proposed but a final determination was <br />postponed. When the Virgin River chub was listed, the Muddy River form was omitted due <br />to uncertainty regarding its taxonomy. A Virgin River Fishes Recovery Plan has recently <br />been finalized and includes both the woundfin and Virgin River chub, excluding the Muddy <br />River population of the Virgin River chub. <br />Critical habitat has not been previously designated for any of the Virgin River listed fishes. <br />On March 18, 1994, the U.S. District Court, Colorado (Court) ordered the Service to <br />designate critical habitat for the woundfm, Virgin River chub, and Virgin spinedace (if it is <br />listed before December 31, 1994). The Court ordered that critical habitat be proposed by <br />April 1, 1995, and be finalized by December 1, 1995. The Virgin spinedace was proposed <br />for listing as threatened on May 18, 1994 (59 FR 25875). <br />4 <br />
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