PROJ00235

• Contract/PO #: C153633
• Contractor Name: Greeley, City of
• Contract Type: Loan
• Water District: 3
• County: Larimer
• Bill Number: HB 91-1006
• Loan Projects - Doc Type: Feasibility Study

I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I

were found, Grass cover on the dike portion of the embankment was somewhat sparse.
In the area which was covered with riprap, there were some small bushes and trees
beginning to grow. These were not significant at the time of our visit. There were no
evidences of significant erosion damage on the upstream slope. There were a few small
rodent holes along the upper portion of the slope which did not appear to affect the
integrity of the structure.

5,2.2,4 Downstream Face

Generally, the downstream face was sparsely covered with grasses, There were no
indications of cracks, settlements, depressions, or bulges on the downstream face, and
there were no indications of significant erosion, A ditch and berm have been
constructed on the road across the downstream face to direct water from the
downstream face. The discharge end of the ditch was beginning to erode back across
the downstream face of the dam. There were a number of small trees growing on the
downstream face, These were generally about 1 to 4 feet tall, except on the extreme
left end of the embankment, where there were a few aspen trees about 15 to 20 feet
tall.

5.2,2.5 Seepage

The seepage area between about Stations 114 + 00 and 117 + 00 was dry at the time of
our August 1990 visit This area was generally covered with vegetation and deadwood,
and did not show any evidences of erosion from flowing water. Several areas of
seepage were observed exiting into the right side of the discharge channel near the
energy dlssipator and extending about 60 feet downstream, These flows were clear and
no evidence of partlde migration was observed, The majority of the flow was confined
to an area about 10 feet by 10 feel, located about 60 feet downstream of the energy
dissipator. This area had been covered wtth gravel and stones, and the seepage was
collected and measured in a V-notch weir. It is estimated that 0,5 to 1 gallon per
minute of water was flowing through the V-notch weir at the time of our visit.

5-4