14Nov 2023 by Nicole Rinaldi

After $3M effort, Idaho officials hope they killed off invasive quagga mussels in Snake River

Idaho News, Research
By Clark Corbin; Idaho Capital Sun Idaho Capital Sun Idaho state officials are hopeful that the approximately $3 million effort to kill invasive quagga mussels detected in the Snake River in September was successful. But they don’t expect to know if they wiped out all of the mussels until waters warm up and water sampling surveys resume next spring. The plan to kill the mussels involved treating a 16-mile section of the Snake River near Twin Falls with a copper-based chemical that was hazardous to mussels and fish and required state officials to airlift boats into otherwise inaccessible portions of the river. Some state employees even camped on tiny islands and river banks for days on end in an effort to kill the mussels before they could reproduce rapidly, which…
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05Oct 2023 by Nicole Rinaldi

‘If we don’t treat, we lose the whole river’: Quagga mussel treatment underway on mid-Snake River

Idaho News
By Jude Binkley; KTVB Quagga mussels. TWIN FALLS, Idaho — Crews are on the Snake River working to treat and eradicate quagga mussels. It has been just over two weeks since the invasive mussels were found in a section of the river near Twin Falls. Since then, the Idaho State Department of Agriculture (ISDA) has done extensive sampling around the mid-Snake River, finding veligers - the larval form of the mussels - between the Twin Falls Dam area and Centennial Waterfront Park. A plume with an adult quagga mussel was also found near Shoshone Falls. Crews are working to deploy containers full of a copper-based formulation called "Natrix" as a treatment to eradicate the mussels. The ISDA says they are acting fast and aggressively to stop an issue that has…
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18Sep 2023 by Nicole Rinaldi

New committee takes on Eastern Snake Plain Aquifer

Idaho News
By Bill Schaefer; Capital Press POCATELLO, Idaho — A diverse group of 13 water users met Sept. 13 to review the 2015 agreement between groundwater and surface water users and its impact on the Eastern Snake Plain Aquifer. The group's job is to draft amendments to the agreement or a new management plan that will help restore the aquifer without harming senior or junior water rights holders. IDWR Director Gary Spackman tasked James Cefalo, the IDWR eastern regional manager, with organizing the advisory committee. In 2016, Spackman designated the aquifer as a Ground Water Management Area. A GWMA designates all or part of a groundwater basin that may be approaching conditions of a Critical Ground Water Area. Idaho aquifer Under a GWMA, applications for new water appropriations may be approved…
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25Jul 2023 by Nicole Rinaldi

Idaho Department of Water Resources won’t shut off groundwater users – at this point

Idaho News
By Clark Corbin; Idaho Capital Sun The south fork of the Snake River runs for more than 60 miles across southeastern Idaho. (Courtesy of Bureau of Land Management) The Idaho Department of Water Resources won’t be shutting off the water for hundreds of groundwater users pumping off the Eastern Snake Plan Aquifer in Idaho at this point in the summer. Last week, Idaho Department of Water Resources Director Gary Spackman found that there was no water demand shortfall for surface water users based on mid-summer water supplies and crop demand, the department announced in a press release issued Thursday. As a result of Spackman’s decision, it will not be necessary to curtail, or shut off the water, for the junior groundwater users, according to the press release. That’s good news…
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03Apr 2023 by Nicole Rinaldi

U.S. Geological Survey to measure water levels in southern Idaho’s Snake River Plain

Idaho News
By Mia Maldonado; Idaho Capital Sun The U.S. Geological Survey announced it will soon begin measuring groundwater levels across southern Idaho, according to a Monday press release. Survey employees working with the Idaho Department of Water Resources and the Bureau of Reclamation will measure groundwater levels in more than 1,400 private and public wells in the eastern Snake River Plain between April 3-14. The region’s aquifer is the area’s primary source of drinking water and irrigation for 1 million acres of farmland in the state aquaculture industry, according to the news release. The collected data will help water experts understand the status of the aquifer ahead of the irrigation season, and the IDWR will use the data to improve its computer model of the aquifer. Water technicians collect aquifer measurements…
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19Jan 2023 by Nicole Rinaldi

Snake headwater reservoirs benefit less from recent storms

Idaho News
By Brad Carlson; Capital Press Palisades Reservoir on the Upper Snake River in eastern Idaho. Comstock Upper Snake River managers are watching the basin’s important east side, where headwater areas so far have seen comparatively less benefit from recent Pacific storms. Snowpack to date for the Oct. 1 water year is looking good, but total precipitation in the east is trailing the other smaller sub-basins, said Brian Stevens, area water operations manager for the U.S.Bureau of Reclamation’s Upper Snake Field Office in Heyburn, Idaho. “The eastern side of the Upper Snake basin is by far the largest contributor to runoff volumes in the system, and we still need above-average precipitation for the rest of the winter and spring — into late June — to have potential to fill the system,”…
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28Nov 2022 by Nicole Rinaldi

Idaho Water Resource Board invests in aquifer recharge, irrigation efficiency projects

Idaho News
Capital Press The Idaho Water Resource Board’s Milepost 31 Eastern Snake Plain Aquifer recharge site. Projects adding to recharge capacity are among those funded by the board Nov. 18. Boosting aquifer levels and improving irrigation delivery efficiency are the focus of Idaho Water Resource Board moves to financially support several projects in the state’s south-central and southeast regions. The board Nov. 18 approved a $14.1 million loan to Raft River Recharge Group. Plans call for building a pump station on the Snake River, a 13-mile pipeline, and recharge basins to add water to a declining aquifer in a state-designated critical groundwater management area. The declining aquifer levels are a key factor in intermittent surface flows on the Raft River, a Snake tributary. Most farmers are now pumping groundwater for irrigation,…
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28Feb 2022 by Nicole Rinaldi

Drought, low snowpack may foretell Idaho’s future

Idaho News
Idaho Statesman Bogus Basin Mountain Recreation Area, Boise, ID. Much of Southern Idaho, cut through in scythe like fashion by the Snake River Plain, relies on the frozen water stored in the state’s mountains to fill its rivers. When winter ends and summer’s broiling heat arrives, it is these snowy peaks that serve as the state’s reservoir, filling the Salmon, Snake, Big Lost, Boise and other tributaries with cold, clear water. But as the amount of snowfall declines, with scientists citing the effects of climate change as a key contributor, major problems arise for the state’s ecosystems, residents and agriculture industry. And that erosion is already underway. By the turn of the century, Idaho could see reductions of 35%-65% of its snowpack, according to a study published in Nature Reviews…
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08Feb 2022 by Nicole Rinaldi

To breach or not to breach the Snake River dams?

Idaho News
By Joel Mills; Lewiston Tribune The Little Goose Dam is seen Feb. 2 along the Snake River near Riparia, Wash. Pete Caster. Several Lewiston city councilors got behind a proposed resolution in favor of retaining the four lower Snake River dams after a presentation Monday from members of Citizens for Preservation of Fish and Dams, but one councilor said he wants a similar presentation from the other side before he casts a vote. Marvin Dugger, Dick Sherwin and Dan Caldwell from the dam preservation group offered their take in opposition to Idaho Rep. Mike Simpson’s $33 billion proposal to breach the dams to improve fish habitat. Several other area governmental entities have gone on the record in opposition to the plan, including Nez Perce County. And several city of Lewiston…
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