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Colorado River flows about average for 2014 water year

Storage still near all-time lows

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A 2014 water year map shows the continuing drought conditions in California, as well as dry patches from Texas, extending north into Oklahoma.

Staff Report

FRISCO — Near-average inflow to Lake Powell the past 12 months helped maintain storage at a similar level to last year in the key Colorado River reservoir. According to the Bureau of Reclamation. Continue reading

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Study: 1934 Dust Bowl still the Godzilla of North American droughts

A dust storm engulfs Stratford, Texas in April of 1935. The drought of 1934 was likely made worse by dust storms triggered by the poor agricultural practices of the time. Credit: NOAA/George E. Marsh Album.

A dust storm engulfs Stratford, Texas in April of 1935. The drought of 1934 was likely made worse by dust storms triggered by the poor agricultural practices of the time.
Credit: NOAA/George E. Marsh Album.

Severe dust storms spawned even more widespread drought, research shows

Staff Report

FRISCO — With all the recent talk of looming megadroughts, the 1934 peak of the Dust Bowl era still remains the most severe and widespread drought in North America during the past 1,000 years, climate scientists say.

Based on tree-ring studies and other physical records, the only other comparable event was way back in the 1500s.

The extent of the 1934 drought was approximately seven times larger than droughts of comparable intensity that struck North America between 1000 A.D. and 2005, and was caused in part by an atmospheric phenomenon that may have also led to the current drought in California, according to a new study. Continue reading

Global warming could reduce Sierra Nevada runoff by 25 percent

Increased plant growth projected to use more water

In the lengthening nights of October, the Snake River starts to freeze.

Global warming is likely to have a big impact on mountain runoff. bberwyn photo.

Staff Report

FRISCO — Forests and brush moving up mountainsides as the climate warms could take a big gulp from streams and rivers, potentially cutting runoff by as much as 25 percent by the end of the century. Warmer temperatures will accelerate plant growth, triggering more water absorption and evaporation, according to researchers with  UC Irvine and UC Merced.

“Scientists have recognized for a while that something like this was possible, but no one had been able to quantify whether it could be a big effect,” said UCI professor of Earth system science Michael L. Goulden. “It’s clear that this could be a big effect of climate warming and that water managers need to recognize and plan for the possibility of increased water losses from forest evaporation.”

According to the researchers, runoff from mountain ranges is vulnerable to temperature hikes that lengthen growing seasons and result in more vegetation growth at high elevations, according to the study, to be published this week in the Proceedings of the National Academy of Sciences. Continue reading

Are New Mexico forests holding steady in the face of climate change, drought and wildfires?

New inventory assesses state’s woodland resources
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STAFF REPORT

FRISCO — Mortality is increasing and growth is slowing down in New Mexico’s forest lands, according to a new forest inventory released in late August. The only species showing overall growth are ponderosa and piñon pines, as well as junipers, as insects, wildfires drought and disease take an increasing toll on the state’s woodlands.

Forests grow on about 25 million acres in New Mexico, with 44 percent on private lands and 31 percent on national forest lands. About 40 percent (10.8 million acres) of the forests are piñon-juniper woodlands, by far the state’s most extensive forest type. Gambel oak is the most abundant tree species by number of trees, and ponderosa pine is the most abundant by volume or biomass. Overall, researchers estimate there are more than 6 billion live trees growing in the state.

The inventory documented the drought-induced piñon pine die-off in the early 2000s, estimating that about 8 percent the species died, but noted that the mortality rate has tapered off.New Mexico’s aspen forests, covering about 380,000 acres, held steady in the past decade. Continue reading

Colorado farming, ranching water ‘in the crosshairs’ as big reservoirs dwindle

Water experts to discuss role of agriculture in Colorado River puzzle

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Can ag water save the Colorado River?

Staff Report

FRISCO — A new $11 million effort to keep water flowing in the Colorado River to Lake Powell could up the pressure on Colorado farmers and ranchers to sell or lease their water.

In fact, agriculture is in the crosshairs in Colorado, according to the Colorado River Water Conservation District, which represents western Colorado water interests. Low water levels in Lake Powell and Lake Mead — the key storage buckets on the Colorado — have prompted measures to put more water in the river.

The CRWCD’s annual water seminar (Sept. 19, Grand Junction) will focus on what that means for western Colorado, with panel discussions and presentations on ag efficiency, the worth of ag efficiency and how ag efficiency works with the chief goal of sustaining ag as a viable industry. Continue reading

Federal funds boost Native American climate resilience efforts

‘Impacts of climate change are increasingly evident for American Indian and Alaska Native communities and, in some cases, threaten the ability of tribal nations to carry on their cultural traditions and beliefs’

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Global warming poses a serious threat to Native American communities.

Staff Report

FRISCO — Climate change poses a serious threat not only to Native American natural resources, but to cultural traditions and spiritual beliefs, top Obama administration officials said last month, announcing $10 million in funding to boost adaptation and mitigation efforts on Native American lands.

The funding is part of President Obama’s Climate Action Plan, which includes White House State, Local, and Tribal Leaders Task Force on Climate Preparedness and Resilience, aimed addressing the impacts of climate change already affecting tribal communities.

“From the Everglades to the Great Lakes to Alaska and everywhere in between, climate change is a leading threat to natural and cultural resources across America, and tribal communities are often the hardest hit by severe weather events such as droughts, floods and wildfires,” said Secretary Jewell, chair of the White House Council on Native American Affairs.

“Impacts of climate change are increasingly evident for American Indian and Alaska Native communities and, in some cases, threaten the ability of tribal nations to carry on their cultural traditions and beliefs,” said Assistant Secretary of Indian Affairs Kevin Washburn. Continue reading

Global warming spells trouble for fish populations in desert rivers of the Southwest

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Dwindling precipitation in the Southwest spells trouble for native fish. bberwyn photo.

Study shows significant loss of fish habitat by mid-century

Staff Report

FRISCO — Big sections of vulnerable stream habitat for native fish in the Southwest are likely to disappear by mid-century as global warming causes stream flows to dwindle.

By 2050, stream-drying events could increase by 17 percent, and the number of zero-flow days could go up by 27 percent in the Verde River Basin, affecting species like speckled dace (Rhinichthys osculus), roundtail chub (Gila robusta) and Sonora sucker (Catostomus insignis).

The drying trend will fragment aquatic habitat, hampering feeding and spawning. Some populations that are already isolated may very well disappear, said Ohio State University researcher Kristin Jaeger, an assistant professor at the School of Environment and Natural Resources. Continue reading

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