For many or most, the rods get stored away and skis are out for the winter. Angler use on the South Fork Boise River is light through the winter months until the fishing closes March 31. But through this phase the weather brings its own changes to the river. A rain on snow event is the type of winter event where water flows and erosion can affect the South Fork Boise River.
The US Geological Survey (USGS) last year issued a science report on the use of laser technology to help exploring the depths and shape of the South Fork Boise river channel from the air.
The report (.pdf) carries the complicated but self-evident title of Evaluation of LiDAR-Acquired Bathymetric and Topograhic Data Accuracy in Various Hydrogeomorphic Settings in the Deadwood and South Fork Boise Rivers, West-Central Idaho, 2007.
It sounds and is complicated. And NASA is involved too. Continue Reading…
Saturday, February 25, 201210:00am until 1:00pm
Registration starts at 9:30am.
Fishing is from 10am – 3pm
Weigh in is at 3:30pm.
You can NOT keep trout!
There will be a 15 inch minimum length for the whitefish our tourney this year.
(Please catch and release the smaller fish)
Please invite your friends and family!
Winter on the South Fork Boise. It is usually a time for the most dedicated anglers, but mostly quiet. So this website will fill some time with a few science reports that we’ll strip out over this month. We’ll call it Science February.
“The river was cut by the world’s great flood and runs over rocks from the basement of time. On some of those rocks are timeless raindrops. Under the rocks are the words, and some of the words are theirs. I am haunted by waters”
When Norman Maclean penned those words in the immortal novella A River Runs Through It, he referenced the Big Blackfoot and the Clark Fork Rivers of Montana. The world’s great flood referenced the break of the ice plug that held back Lake Missoula, draining the lake, creating the channeled scablands of eastern Washington, and depositing sediment in the Willamette Valley of Oregon. But whose “words are theirs” the words found under the rocks?
It certainly was a long, bleak December and early January, especially if you ski at Bogus Basin. The drive into the South Fork canyon was less treacherous. In the past few days a wave of Pacific storms finally arrived and dumped snow across western and central Idaho. Here’s a chart showing snowpack so far this year compared to the three previous years:
So what does this mean for flows this summer?
The South Fork Boise River flows into Arrowrock Reservoir some 21 river miles downstream of the Danskin Bridge. Arrowrock also gets water from the Middle and North forks of the Boise River. These three branches form three major avenues of access for fish that wander from headwaters to mainstem rivers. And the rare bull trout is known to migrate great distances, sometimes hanging out in the South Fork Boise, only to drift back downstream to Arrowrock Reservoir and then travel up to a headwaters stream tributary to the North or Middle Fork Boise River.
Understanding the effects of Anderson Ranch Dam and Arrowrock operations on bull trout is an area of inquiry that the Bureau of Reclamation has pursued for many years. Original studies in the late 1990s and early 2000s helped establish an understanding when the bull trout move between the headwaters and Arrowrock reservoir.
In the fall of 2011 more field work was initiated and a weir was placed in the North Fork Boise River at Barber Flats and a similar structure on the Middle Fork Boise River. The Bureau has received assistance from Idaho Fish and Game and the Boise National Forest. The bull trout captured at the weirs are implanted with a radio tag and are tracked for two or three years to better understand living and migratory habits. Continue Reading…
We came across another video with some nice shots of South Fork Boise fishing. Enjoy.
Chris Jones worked tirelessly through 2011 on the Pierce Creek reconnection project and spent many hours of volunteer time coordinating the construction planning and execution through the fall of the year. For his efforts we recognize him as the person of the year for 2011. Thank you Chris.
Year 2011 wanes, let’s have a little retrospective video. Here’s a fall fishing video from troutlie.com.
What is this graph showing us?
The answer is after the jump. Continue Reading…