are some tips on using the Grande Ronde DART web pages.
Select the "Graphics" format, it is the easiest to use.
You can create graphs that show fish passage over different dams, both
for the current year, and for years past (very fun to play with).
You type in a range of dates for the Start/Stop, and then select the
"variables" you want to track, and hit the "Begin Run"
- Start Date: 05/01
- Stop Date: 09/18 (note: the latest data is usually 1 day behind)
- River Variable: Adult Passage
- Year: 2001, 2000, 1999
- Project: Bonneville
- Species: Steelhead (note, you may have to also click the default
setting "Chinook" to deslect it)
results should look pretty impressive!
It can also be very interesting to plot fish passage over the
different dams in the Columbia and Snake river, to see where the run
is. For example, selecting the date range 9/1 - 9/18 and the dams Ice
Harbor, Lower Monumental, Little Goose, and Lower Granite, will show a
HUGE surge of steelhead that have just started moving up the lower Snake
river. You can also get a feeling for how long it takes the fish to
move between dams.
It can also be interesting to plot water temperature and Adult
Passage. It becomes pretty clear that water in the mid 70s pretty much
stops fish movement. To get this graph you select both Adult Passage and
Temperature as a parameter.