1913 1999
Side by side comparison
Map
Data Sheet
NEAR LASAL JUNCTION
General Description: This photopoint is found on the east side of the
highway 163 right-of-way fence at a point .75 mile north of the oil pipeline
pumping plant at LaSal Junction. The view is south southeast across public land
administered by the Bureau of Land Management.
Soils: Two soil types are found at this site. Ignacio-Leanto fine sandy
loam soils occupy the foreground. These soils are fine sandy loams with
moderately rapid permeability. Depths to bedrock range from 10 to 40 inches.
Soils in the mid-ground (to the bottom of the hill) are Mido loamy fine sands.
These soils are very deep, over 60 inches, with a rapid permeability and a low
water supplying capacity.
Precipitation: Average annual precipitation at this point ranges from 10
to 12 inches.
Legal Description: SW1/4NE1/4 Section 30 T.28S., R.23E.
COMPARISON: When comparing the 1913 and the 1999 images, it is obvious
that there has been an increase in plant diversity and frequency resulting in a
much healthier community with increased protective ground cover. Some plant
species present in 1999 include big sagebrush, fourwing saltbush, snakeweed,
Indian ricegrass, sand dropseed, curlygrass, threeawn and globemallow.
Cheatgrass and Russian thistle are also found here. The pinyon-juniper community
near the hill has expanded since 1913.
Original:
Date: October 14, 1913 (- A)
Photographer: F.L. Hess
Source: U.S. Geological Survey, Denver, Colorado
Photograph Number: Hess No. 573
Retake:
Date: September 5, 1999 (- B)
Photographer: Earl Hindley
Source: San Juan County
