WCHS-01033 Winsor Dam on Santa Clara Creek

WASHINGTON COUNTY HISTORICAL SOCIETY     (Washington County, Utah)

ORIGINAL CONSTRUCTION DRAWINGS FOR THE SHEM DAM

on the Santa Clara River/Creek

HISTORY & DESCRIPTION

The original construction drawings for Shem Dam are among the collected professional drawings of Leo Snow.
They include the original pencil-and-paper drawings, made at the same scale, from which the final ink-and-film
drawings were traced. Originally on file at the office of the Washington County Recorder in St. George, digital
scans were made of all of the drawings in the Leo Snow collection before it was transferred to the Dixie State
University Library in 2014.

The final drawings are ink on drafting film, made on three sheets, each measuring about 25" × 33".
Sheet 1 is a plan view of the overall dam, with 5-foot-interval contour lines showing the river channel and
    adjacent hillsides.
Sheet 2 has a section drawing of the overall dam including the center spillway, plus detail drawings of the tunnel
    that passed through the dam to divert water to an irrigation ditch.
Sheet 3 has additional detail drawings of the tunnel, including the head gate and the gear lift that operated the gate.

The digital scans of the original ink-and-film drawings for Shem Dam are reproduced, at a reduced scale,
on Pages 47-55 of the HAER No. UT-96 document referenced below.


SAMPLE DRAWING

Contruction drawing of the Shem Dam


REFERENCES

Historic American Engineering Record, Shem Dam (Winsor Dam), HAER No. UT-96
Prepared by Scott O'Mack, William Self Associates, Inc.,
    for the USDA Natural Resources Conservation Service (NRCS)
March 2016, 96 Pages (see pp. 5-6, 47-55)
[Large file, so this may take a while to load]