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7.8. Survey Procedures |
If you're responsible for
a group, have people do the work in pairs. For safety reasons,
do not conduct a stream survey alone or during thunder and lightning
storms. You should always try to conduct a survey when water
levels are as normal as possible. You can start at the mouth
of the stream and work upstream until the source is located.
However, if the source can easily be identified (e.g. a lake),
it may be easier to start there and work downstream. |
Please see
these sections Before You Begin Restoration and Enhancing a
Watercourse for important legal, safety, and ecological considerations
when you are working on a site. |
1. As you walk along the
watercourse, stop at the following places:
- Where another brook or stream
joins the watercourse
- Where drainpipes go into the
watercourse
- Where there are bridges/culverts
over the watercourse
- Where farm animals use the water
- Where land has been ploughed or forest
cut right up to the water's edge
- Where you see a lot of garbage
- Any other place where you suspect
there is a "problem"
- Where your maps (past and present)
indicate potential problem areas
2. On your map, number the places where you stopped. Then write
this number on the top of a survey form. Start
a new form for each place you stop. Master survey forms
for the different watercourses are included in the following
pages; make numerous copies of the one you need.
3. In stream surveys, mark every pool in the river with a "P"
at the appropriate place on your map. Record the maximum depth
of each pool using a metre stick. Make an estimate of depth
if it is deeper than your measuring stick.
4. At each stop, take a water sample. Make sure the number on
the bottle corresponds to the number on the stream survey sheet.
Always pre-rinse the bottle with the water you are collecting
before you take the sample.
5. Take the temperature of the water. Be sure to hold the thermometer
in the water long enough. It takes at least two minutes for
the instrument to adjust to the water.
6. Test the pH if you have a testing kit.
7. Answer the remaining questions on the survey form. |
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