|
<br />I
<br />I
<br />I
<br />I
<br />I
<br />I
<br />I
<br />I
<br />I
<br />I
<br />I
<br />I
<br />I
<br />I
<br />I
<br />I
<br />I
<br />I
<br />I
<br />
<br />Check Location Width Height Comment I
<br />Name
<br />Finley NE 1/4, Sec 34, T7N, R67W 36' 8' Rehab or Replace.
<br />Trowbridge SE 1/4, Sec 30, T7N, R66W 22' 10' Replaced in 2001
<br />Hurrich NW 1/4, Sec. 29, T7N, R66W - - New Required
<br />Montgomery NE 1/4, Sec. 34, T7N, R66W 36' 8' Replaced in 2002
<br />Loeffler SW 1/4, Sec. 22, T7N, R66W 34.25' 7' Replace
<br />Magnuson SE 1/4, Sec. 22, T7N, R66W 36' 8' Replaced in 2002
<br />Town Boyd NW 1/4, Sec. 23, T7N, R66W 32' 7' Replaced in 2002
<br />West 85 NW 1/4, Sec.24, T7N, R66W 30' 7' Replace
<br />East 85 NW 1/4, Sec. 24, T7N, R66W 30' 9' Replace
<br />Clark SE 1/4, Sec.18, T7N, R65W 28' 7' Replace
<br />Hwy 14 S. NW 1/4, Sec. 17, T7N, R65W 16' 8' Replaced in 2001
<br />Tatayama SW 1/4, Sec. 8, T7N, R65W 26' 7' NoW ork Required
<br />Walpole NE 1/4, Sec. 9, T7N, R65W 26' 6' Replace
<br />Last NW 1/4, Sec.lO, T7N, R66W 24' 6' Replal;e
<br />
<br />TABLE 1
<br />CHECKSTRUCTURES~Y
<br />
<br />As described previously, the existing structures typically check the water levels from one to four
<br />feet, employing stop logs between four and six feet in length, inserted in 4 to 6 bays separated by
<br />concrete buttresses. The structures are in disrepair and generally need to be replaced. An
<br />additional check is needed at the location labeled as the Hurrich Check where none exists at the
<br />present time. The Tatayama Check is the only one listed where there is no need at this time for
<br />repair or replacement of the check.
<br />
<br />Downstream apron elevations of the old check structures have been typically too high for effective
<br />hydraulic energy management, with the result that control of downstream scour has been an on-
<br />going maintenance chore. The structures all suffer from deteriorated concrete; erosion of the
<br />backfill around the structures; and erosion under the base slabs. The interior buttress that
<br />support the stoplogs are deteriorated to the point, on several of the structures, that they are ready
<br />to collapse.
<br />
<br />Larimer & Weld Feasibility Study
<br />
<br />Page 6
<br />
|