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24 BULLETIN OF THE UNITED STATES FISH COMMISSION.
<br /> about 12 feet wide and 1 to 4 feet deep. Temperature 680,u fishes were obtai
<br />i
<br /> with the net.
<br /> 10. Gunnison River, at Delta, Colo.-At Delta, some distance below the Bl,
<br />Canon
<br />the Gunni
<br />i
<br />l
<br /> ,
<br />son
<br />s a
<br />arge stream 3 to 4 rods wide and 2 to 5 deep, the wat
<br />clear and of a summer temperature of about 72C. Its current is swift; and in its br(
<br /> channel are many islands. The bottow is gravelly or sandy, and in still places oc
<br /> sionally muddy. The fishes here are the "Razor-back" or - Hump-back suck(
<br /> (Xyrauchen cypho), the "Flannel-mouth sucker" (Catoston,us latipinnis)
<br />the 11 BI
<br /> ,
<br />head sucker" (Pantosteus delphinus), the " Bony-trail" (Gila elegansthe Round-ta
<br /> (Gila robusta.), the 11 White Salmou" (Ptychocheilus luci.us), the "Bult-Lead" (Cot
<br /> bairdi punctulatus) and the minnow (Agosia yarrorei).
<br /> 11. Uncompahgre Ri.ver..-Tbis stream rises in the wild Uncompahgre Pass
<br />abc
<br /> ,
<br />Ouray. In its upper course, it has few or no fishes, for it flows through wild a
<br /> deep ravines with man" cascades. Besides this, it has iron springs among its feede
<br /> and trout seldom or never lire in iron waters. Above Ouray, are some hot: sprint
<br />-- and at Ouray stamp-mills reader the water impure. Below Ouray are some trot
<br /> but probably not many.
<br /> Between Ouray and Montrose, the stream leaves the mountains, and from 5ior
<br /> rose to its mouth at Delta, it is very sluggish and its waters are largely drawn off 1
<br /> the irr gating ditches. The plain is largely alkaline, and the banks of the stream a
<br /> lined with grease'wood (S arcobatus vermiculcatus), the sure iadicataon of an alkaline sal
<br /> At Delta the only water left is from the seepage of ditches. This is grayish yelio
<br />
<br />' and forms a succession of pools with bottom of gravel or mud, some of them 5 or 6 fe
<br /> e deep. Temperature 780. The water is full of fishes of the species enumerated abo;
<br />t1 ' as found in the Gunnison. "a elegans,.Agosia, and Cottui were not seen'i-uthe II
<br />
<br />t oom ah ,_y
<br />p gre. On the other Maud, a-single specimen of what seems to be anew _ba
<br /> of Xyrauchen was taken in the little pond close to the station at Delta.
<br />' 12. Green River, at Blake City (Green River Station), Utah.--At this point ti
<br /> river flows through a barren desert, its conrse largely bounded by high cliff &
<br />I
<br /> waters are yellow, and except on certain rocky shallows deep and sluggish. At lo
<br /> ,
<br />water the river is about 500 feet wide and 3 to 8 feet deep. In August the water wl
<br /> moderately clear, but at the time of the spring floods it becomes a paste of red mui
<br /> We seined the stream along the west side from the railroad bridge to the foot of tb
<br /> shallows about oue-fourth mile below. Xyrauchen cypho is very abundant, reachin
<br /> a weight of 10 pounds, and is a good food-fish. Catostomzm liatipinnis reacher 3 to'
<br />
<br />
<br />- " - -- I
<br />)oun ds,_ I3esicles these we obtained Gila. el am, a small fish m
<br />garded as worthleE
<br /> because full of bones. The trout do not descend Green River much if any below tb
<br /> boundary of Wyoming Territory.
<br />{ 1.3. Price River flows into the Green River from the west:. It rises near the san
<br />
<br />` mit of the Wahsatch range. It soon becomes gran and muddy and when it strike
<br /> the desert at the eastern foot of the mountains -its waters are all used for ixT gatic
<br />'
<br /> 44though
<br />along river; its waters are nearly all lost in- summer
<br />and itis worthless
<br /> y
<br />flgh, It is said that trout oceur in some ponds on the eastern slope of the Wahsat
<br /> 14. San Juan Racier.-The San Juan is one of the chief tribataries of the Colo
<br /> Ong its source n a cobsiderable number of large, clear M. antain streaut?
<br /> ,
<br />read'in the mouutaine of southwestern Colorado (Sierra Ban Juan, eta), to the
<br />was K
<br />f is r_
<br />
<br />,yy»: -.....,-.. . _ .... . . .. . ... ... .. ._.? .._.-,.. .-- as. _ _. > ?.s- ._._ _ _. _
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