FLOOD06285

• County: Mesa
• Community: Grand Junction
• Stream Name: Colorado River
• Basin: Colorado Mainstem
• Title: Grand Junction Riverfront Development
• Date: 4/1/1992
• Prepared For: State of Colorado
• Prepared By: US Army Corps of Engineers
• Floodplain - Doc Type: Project

that point continues as an armored levee along the river to
32-1/4 Road. The tie-in is still well within the 100-year flood
plain. This levee system was inspected in 1988 for qualification
under Public Law 84-99 rehabilitation assistance and was rejected
due to inadequacies relating to no tie-in to high ground, levee
crown depressions, lack of all-weather trafficability, excess
vegetation and trees on levee slopes, and lack of erosion
protection in the downstream portion of the tie-back levee. No
residential structures are within the 100-year flood plain behind
this system, but the 500-year flood plain contains about 12
structures.

SITE F - Station 393.3 to 393.2, right bank. The upstream
end of this levee system begins at 32-1/4 Road and continues west
along the river about 600 feet. The downstream end terminates as
a spur. The levee appears to protect the Clifton Sanitation
District sewage lagoons, but is not tied to high grou~d above the
100-year flood at either end. The lagoon dikes appear to be
about 1 foot higher than the levee system. This system was also
part of the Public Law 84-99 inspection program described above
and did not meet the minimum criteria due to lack of tie-in to
high ground and excessive vegetation on the slope.

SITE G - station 387.4 to 386.6, right bank. This is the
potential levee under study by the Corps and the City of Grand
Junction, described at the end of section 4 of this report.

SITE H - station 385.7 to 385.6, right bank. This levee
segment was built by the City of Grand Junction as an extension
of the riverfront park and bike path. The levee is tied to the
remnant spoil levee left over from the 1983 and 1984 emergency
levee at its upstream end and the Grand Avenue bridge abutment at
its downstream end. It was intended to protect the residential
area of Riverside in the City of Grand Junction. This levee
system was inspected for Public Law 84-99 consideration in 1988.
The levee does not appear to meet minimum Public Law 84-99
guidelines due to excess vegetation at the downstream end, along
with lack of armoring, and the instability of the remaining spoil
levee upstream from the engineered segment. The Riverside area
was studied by the Corps at the reconnaissance level and
determined that a Federal interest does not exist for development
of flood control protection.

SITE I - station 385.6 to 385.2, right bank. This levee
segment was built as an emergency levee originally in response to
the 1983 and 1984 floods. At the upstream end it is tied to the
Grand Avenue bridge abutment; at the downstream end it ends as a
spur. The levee is intended to protect the Grand Junction public
works yard from flood damages. This levee was inspected in 1988
for qualification for Public Law 84-99 levee rehabilitation
assistance. The levee did not meet the requirements due to
inadequate cross section, excess vegetation and trees on the

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