Side by side comparison
General Description: The view is upstream of Hart Draw from an overlook
described in the legal description. The entire area is public land administered
by the Bureau of Land Management. Baker's original photograph is in relatively
poor condition but still illustrates changes since 1927.
Soils: Soils immediately adjacent to the drainage channel are
Torrifluvents that can be sodic. These soils are usually deep unstabilized sandy
and gravelly soils that are frequently reworked by stream flow. Thus, vegetation
has difficulty establishing below high water levels. Soils extending from the
immediate floodplain and associated terraces to canyon walls consists of Nepalto
gravelly sandy loam. These soils are deep with an effective rooting depth of
more than 60 inches.
Precipitation: The average annual precipitation in Hart Draw at this
location ranges from 7 to 9 inches.
Legal Description: NW1/4SW1/4 Section 31 T.29 1/2 S. R., 22E.
COMPARISON: The channel in Hart Draw has obviously narrowed with more
vegetation established on the banks, floodplains and terraces. This is in spite
of a very harsh situation where high flow events are common. The intermittent
stream will not allow a major riparian habitat to establish here, but
significant improvements have still been made.
Date: 1927 (- A)
Photographer: A.A. Baker
Source: U.S. Geological Survey, Denver, Colorado
Photograph Number: Baker No. 280
Date: May 12, 1999 (- B)
Photographer: Earl Hindley
Source: San Juan County
Angel Arch, Canyonlands National Park,
San Juan County, Utah
San Juan County Sheriff