Operation And Maintenance Plan Template Page 34
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39Dam ID: HI-####
Inspection No:
Hawaii Reservoir
Date:
Month Day, Year
7. Downstream Slope:
(Typical Slope ±
:
)
Access:
lower roadway along toe
roadway to outlet works
walkway to outlet works
None Observed
Slope Protection:
None Dumped Rock
Rip Rap
Grouted Rip Rap
Concrete
Erosion:
Loose soil w/ little vegetation Rut (<6”) Gully (>6” deep)
Not Visible
None Observed
Description:
Cracks:
Parallel with crest
Perpendicular to crest
Slide visible
Not Visible
None Observed
Description:
Sinkholes:
Not Visible
None Observed
in. Wide
x
in. Long
x
in. Deep
Description:
Vegetation:
None Low Ground Cover
Bushes or Tall Grass
Trees #
<6”
>6” & <20”
>20”
Description:
Seepage:
Seep Spot Number 1
Green Vegetation
Wet or Muddy Ground Ponding Water Not Visible
None Observed
Flowing, Description:
Water Clarity: Clear
Some particles
Muddy
Other:
Description:
Seep Spot Number 2
Green Vegetation
Wet or Muddy Ground Ponding Water Not Visible
None Observed
Flowing, Description:
Water Clarity: Clear
Some particles
Muddy
Other:
Description:
Findings:
a. The downstream slope was not inspected.
b. Satisfactory – Expected to fulfill intended function – no corrective action required.
c. Fair - Expected to fulfill intended function, but maintenance or other actions are recommended.
d. Poor – May not fulfill intended function; maintenance, repairs, or other actions are necessary.
e. Unsatisfactory – Is not expected to fulfill intended function; repair, replacement, or modification is necessary.
f. Unknown – Not visible, not accessible, not inspected, or unable to determine based on the observation taken.
Corrective Actions:
g. Slope protection needs maintenance or repair. Description:
h. Rut and/or Gully erosion was observed on the slope, which requires maintenance and/or repair.
Description:
i. A crack was observed on the slope, which requires further investigation to determine the underlining cause.
Monitor the area and/or repair as required.
j. A sinkhole was observed on the slope, which requires further investigation to determine the underlining cause.
Repair and monitor the area.
k. The down stream slope was not visible due to high grass and bush vegetation. Clear high vegetation and
maintain low to enable easy visual inspection.
l. Tree(s) were observed on the dam embankment. Trees have been identified as the probable cause of piping
failures, and can possibly cause severe damage to the embankment if they are uprooted during a high winds.
Corrective action is required to remove the tree hazards from the dam. All repair work shall be accomplished
as per the requirements of licensed geotechnical or civil engineer. Routinely monitor the damaged area for
signs of settlement and seepage.
m. Seepage/Ponding water was observed. Monitor and conduct further investigation to locate the source of water
and extent of any possible hazardous or developing condition.
n. Seepage was observed flowing and particles were observed to be removed by the flow. Take immediate
action to stop the loss of soil from the embankment. Conduct further investigation to determine the underlining
cause and take corrective action. Monitor the area.
o. The slope was very steep, around a 1 to 1 slope, further study is required to verify slope stability.
p.
Sheet 6 of 11
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