Coeur d’Alene Lake Management Plan - Lake*A*Syst Manual: IDEQ (208) 769-1422 and the CDA Tribe (208) 667-5772
Risk Assessment Worksheet
Access Roads and Driveway Runoff
Assessment Worksheet 1 - Condition of Access Roads and Driveways
The assessment worksheet below will help you identify potential environmental risks related to the management
of your property’s access roads and driveways. For each question indicate your risk level in the right-hand col-
umn. Some choices may not correspond exactly to your situation. Choose the response that best fits. When fin-
ished, turn to the Access Roads and Driveway Runoff Action Worksheet on page 7-14 and record your medium
and high-risk practices. The goal is to lower your risks. Use the BMP recommendations provided in this section
to help you decide how to best reduce pollution associated with water runoff.
LOW RISK MEDIUM RISK HIGH RISK
YOUR
RISK
Access road type
and slope of road to
home
I have a paved road;
or my road has a good
gravel base.
My road is compacted
dirt, and its slope is
0% -15%.
My road is compacted
dirt, and the slope is
>15%.
Condition of un-
paved road into
home
Little erosion is on my
road, with no obvious
gullies or road wash
channels.
My road has some
signs of erosion with
loss of soil.
Obvious erosion is
evident on my road,
with deep gullies and
wash channels.
Condition of road
cut bank (above
slope) and fill bank
(below slope)
The banks of my road
are relatively flat and
well vegetated, with
no obvious signs of
erosion.
My road banks are
steep but well protect-
ed with vegetation
and only some signs
of erosion.
My road banks are
steep and generally
bare. Erosion is evi-
dent with gullies and
soil slumps.
Condition or exist-
ence of structures
for water runoff
management
My drainage ditches
are deep and vegetat-
ed. I maintain my
culverts. I use water
bars or rolling dips on
steep slopes to slow
runoff velocity.
My drainage ditches
and culverts show
evidence that they are
not completely effec-
tive in runoff man-
agement.
My drainage ditches
are shallow or flat
allowing road wash;
my culverts are
plugged or there are
no culverts. My road
needs water bars or
rolling dips.
Where does storm-
water runoff from
roads and road
banks end up?
Most of my storm-
water flows over for-
ested land where sedi-
ment can drop out
before reaching any
surface water.
A good deal of my
stormwater flows di-
rectly into surface
water; the water is
only slightly turbid
(dirty).
Most of my storm-
water runoff is chan-
nelized and flows
directly into streams
or the lake; the water
is turbid.
7-13
Low
Medium
High
Low
Medium
High
Low
Medium
High
Low
Medium
High
Low
Medium
High
Coeur d’Alene Lake Management Plan - Lake*A*Syst Manual: IDEQ (208) 769-1422 and the CDA Tribe (208) 667-5772
Action Worksheet
Access Roads and Driveway Runoff
Write all high and medium
risks below.
What can you do to reduce the risks?
Set a target date
for action.
Sample: Runoff from my drive-
way runs directly into a stream or
the lake.
Slow movement of water running down the
driveway with culvert boxes that divert storm
water into heavily vegetated areas.
One week from
today.
7-14