FromThe Durango Herald (Jonathan Romeo) via The Cortez Journal:
A U.S. Geological Survey river gauge in Farmington that recorded the Animas River flowing at nearly non-existent levels was the result of human error, the scientific agency said Friday.
Fletcher Brinkerhoff, a supervisory hydrologic technician for the USGS in Albuquerque, said the reading of 0 cubic feet per second at the gauge was the result of incorrect information entered into the USGS’s database.
The Durango Herald reported about record-low reading in a Page 1A story Friday.
Still, water levels the past few weeks have been incredibly low, Brinkerhoff said, hovering around 5 cfs.
Here’s the release from the USGS (Mia Drane-Maury, Cheryl Dieter):
Reductions in water use first observed in 2010 continue, show ongoing effort towards “efficient use of critical water resources.”
Water use across the country reached its lowest recorded level in 45 years. According to a new USGS report, 322 billion gallons of water per day (Bgal/d) were withdrawn for use in the United States during 2015.
This represents a 9 percent reduction of water use from 2010 when about 354 Bgal/d were withdrawn and the lowest level since before 1970 (370 Bgal/d).
“The downward trend in water use shows a continued effort towards efficient use of critical water resources, which is encouraging,” said Tim Petty, assistant secretary for Water and Science at the Department of the Interior. “Water is the one resource we cannot live without, and when it is used wisely, it helps to ensure there will be enough to sustain human needs, as well as ecological and environmental needs.”
In 2015, more than 50 percent of the total withdrawals in the United States were accounted for by 12 states (in order of withdrawal amounts): California, Texas, Idaho, Florida, Arkansas, New York, Illinois, Colorado, North Carolina, Michigan, Montana, and Nebraska.
California accounted for almost 9 percent of the total withdrawals for all categories and 9 percent of total freshwater withdrawals. Texas accounted for about 7 percent of total withdrawals for all categories, predominantly for thermoelectric power generation, irrigation, and public supply.
Florida had the largest share of saline withdrawals, accounting for 23 percent of the total in the country, mostly saline surface-water withdrawals for thermoelectric power generation. Texas and California accounted for 59 percent of the total saline groundwater withdrawals in the United States, mostly for mining.
“The USGS is committed to providing comprehensive reports of water use in the country to ensure that resource managers and decision makers have the information they need to manage it well,” said USGS director Jim Reilly. “These data are vital for understanding water budgets in the different climatic settings across the country.”
For the first time since 1995, the USGS estimated consumptive use for two categories — thermoelectric power generation and irrigation. Consumptive use is the fraction of total water withdrawals that is unavailable for immediate use because it is evaporated, transpired by plants, or incorporated into a product.
“Consumptive use is a key component of the water budget. It’s important to not only know how much water is being withdrawn from a source, but how much water is no longer available for other immediate uses,” said USGS hydrologist Cheryl Dieter.
The USGS estimated a consumptive use of 4.31 Bgal/d, or 3 percent of total water use for thermoelectric power generation in 2015. In comparison, consumptive use was 73.2 Bgal/d, or 62 percent of total water use for irrigation in 2015.
Water withdrawn for thermoelectric power generation was the largest use nationally at 133 Bgal/d, with the other leading uses being irrigation and public supply, respectively. Withdrawals declined for thermoelectric power generation and public supply, but increased for irrigation. Collectively, these three uses represented 90 percent of total withdrawals.
Thermoelectric power decreased 18 percent from 2010, the largest percent decline of all categories.
Trends in total water withdrawals by water-use category, 1950-2015.
A number of factors can be attributed to the 18 percent decline in thermoelectric-power withdrawals, including a shift to power plants that use more efficient cooling-system technologies, declines in withdrawals to protect aquatic life, and power plant closures.
As it did in the period between 2005 and 2010, withdrawals for public supply declined between 2010 and 2015, despite a 4 percent increase in the nation’s total population. The number of people served by public-supply systems continued to increase and the public-supply domestic per capita use declined to 82 gallons per day in 2015 from 88 gallons per day in 2010. Total domestic per capita use (public supply and self-supplied combined) decreased from 87 gallons per day in 2010 to 82 gallons per day in 2015.
The USGS is the world’s largest provider of water data and the premier water research agency in the federal government.
Click here to go to the USGS website to read the report. Here’s the abstract:
Spatial and temporal variability in the frequency, duration, and severity of hydrological droughts across the conterminous United States (CONUS) was examined using monthly mean streamflow measured at 872 sites from 1951 through 2014. Hydrological drought is identified as starting when streamflow falls below the 20th percentile streamflow value for 3 consecutive months and ending when streamflow remains above the 20th percentile streamflow value for 3 consecutive months. Mean drought frequency for all aggregated ecoregions in CONUS is 16 droughts per 100 years. Mean drought duration is 5 months, and mean drought severity is 39 percent on a scale ranging from 0 percent to 100 percent (with 100% being the most severe). Hydrological drought frequency is highest in the Western Mountains aggregated ecoregion and lowest in the Eastern Highlands, Northeast, and Southeast Plains aggregated ecoregions. Hydrological drought frequencies of 17 or more droughts per 100 years were found for the Central Plains, Southeast Coastal Plains, Western Mountains, and Western Xeric aggregated ecoregions. Drought duration and severity indicate spatial variability among the sites, but unlike drought frequency, do not show coherent spatial patterns. A comparison of an older period (1951–82) with a recent period (1983–2014) indicates few sites have statistically significant changes in drought frequency, drought duration, or drought severity at a 95-percent confidence level.
From the White River Conservation District (Callie Hendrickson) via The Rio Blanco Times:
Thank you to all the interested public and stakeholders for your commitment to finding the drivers of the algae in the White River. We also want to thank you all for your patience with our Technical Committee (TC) as they have put a great amount of time, effort, and energy into identifying the most critical elements to the Scope of Work (SOW) that will help identify the causes of the algae. This is a very complex problem that has evolved over time and it will require some time to identify the cause. It is anticipated that there is no one single cause or source of this problem. There are multiple rivers across the western United States that are experiencing the excess algae issue, much like the White River.
A quick review of what the Technical Committee has done reminds us that USGS had originally recommended we do a one-year study primarily up-river from Meeker. The TC asked USGS to provide a proposal that would also include studying the river all the way down to Rangely and to make it a multi-year study over concerns that one year’s worth of data would not be statistically significant. USGS came back to the group with that proposal which gave many of the committee members “sticker shock.”
Realizing that it would be a huge challenge to get down to the detail necessary, a five-member workgroup was appointed in January to work out those details and bring a recommendation back to the TC. The final recommendation from the workgroup is the culmination of many hours (days), conversations, meetings, emails, etc. I’m confident that the workgroup has done exactly what the TC asked.
In reviewing the USGS draft SOW, the workgroup literally dissected it into a chart where they evaluated it line by line based on prioritized questions. Then they developed and analyzed a more elaborate spreadsheet for more discussion so that they could sort based on priorities and the “core” tasks required to ensure scientific analysis and credibility to the study. There were a number of tasks that each individual would like to include but the group finalized the SOW based on the highest priorities ensuring scientific integrity in determining the cause of excess algae. The workgroup’s final step in the two-month processes is to present the final SOW to the technical committee on March 21.
The workgroup recognizes that there is a sense of urgency in finding the cause of the algae and has balanced that sense of urgency with a solid scientific-based study that will give us the best of both worlds. To identify different sources of nutrients in the White River as quickly as possible, the proposed SOW will analyze isotopic-signatures of oxygen and nitrogen from nitrate in various source materials and in the river during 2018. Please remember, there is no guarantee that the “signatures” will be different enough to help determine the potential source. While analyzing samples for isotopic signatures, the proposed SOW will simultaneously include efforts to help develop a better understanding of the physical and chemical properties controlling the algal growth.
The draft proposal includes annual progress reports from USGS to evaluate the next year’s proposed work based on findings of the current year. We will be using adaptive project management based on annual findings.
While the anticipated cost is more than any of us would like to see, the workgroup has done a great deal of individual research and determined that we do need all the components of this SOW. Discussion was had about the USGS preliminary costs being a little higher than potentially other researchers. The consensus of the workgroup was that with USGS providing 35 percent of the funding and their reputation of being nonbiased, they are the best entity to have do this research and analysis.
So, how are we going to pay for the study? We currently have commitments for a total of $60,000 for 2018. That leaves us approximately $30,000 to raise for 2018 work. The conservation district and others will be meeting with individuals and agencies during the remainder of March to solicit this $30,000 because it is too short of a time frame to get grant funding and it seems like it is a “doable” amount to raise for such an important issue to the community.
In ensuing years, we will be seeking support again from the stakeholders and applying for grants through the Basin Roundtable, the Colorado Water Conservation Board and others to be determined.
The White River Conservation District anticipates that we will have annual agreements with USGS for the study dependent upon funding availability and on adaptive research based on each year’s outcome.
The technical committee meeting will be March 21 at the Fairfield Center beginning at 11 a.m. At that time the workgroup will give a brief overview of their recommendations followed by a more detailed presentation of the SOW by USGS. We will break for lunch and reconvene at 1:30 p.m. for further discussion and public comment specifically on the proposal in anticipation of finalizing the SOW by end of the day.
Landowners and interested parties are welcome to attend the technical committee meeting and will have an opportunity to provide comment and input on the proposal during the public comment period. We strongly encourage that anyone interested in providing comment in the afternoon attend the morning session, where they receive a copy of the proposal and hear the presentations.
Visit the White River and Douglas Creek Conservation Districts’ website (www.whiterivercd.com) to find copies of the workgroup’s recommendations, previous meetings’ minutes, research and meeting information. Contact the conservation district office at 878-9838 with any questions.
This group was the “food base” team from the U.S. Geological Survey, led by Ted Kennedy and Jeff Muehlbauer. They had started their research trip at Lees Ferry, 87 miles upstream; they had already been on the river more than a week, and they looked it. Short-timers in the Grand Canyon, like me, wear quick-dry clothes and wide-brimmed hats only days or hours removed from an outfitter’s store in Flagstaff, Arizona. Long-termers like river guides and the USGS crew look like Bedouin nomads, with long-sleeved baggy clothes, bandannas, and a miscellany of cloths meant to protect every inch of skin from the sun — yet nevertheless with vivid sunburns, chapped and split lips, and a full-body coating of grime. Almost as soon as I got there, the ecologists wrapped up their work, packed their nets, buckets, tweezers, and other gear, and led me to their home: a flotilla of enormous motorized rubber rafts that held a mini-house of living essentials and a mini-laboratory of scientific essentials, all tightly packed and strapped to get through the rapids of the Grand Canyon.
A rash of earthquakes in southern Colorado and northern New Mexico recorded between 2008 and 2010 was likely due to fluids pumped deep underground during oil and gas wastewater disposal, says a new University of Colorado Boulder study.
The study, which took place in the 2,200-square-mile Raton Basin along the central Colorado-northern New Mexico border, found more than 1,800 earthquakes up to magnitude 4.3 during that period, linking most to wastewater injection well activity. Such wells are used to pump water back in the ground after it has been extracted during the collection of methane gas from subterranean coal beds.
One key piece of the new study was the use of hydrogeological modeling of pore pressure in what is called the “basement rock” of the Raton Basin – rock several miles deep that underlies the oldest stratified layers. Pore pressure is the fluid pressure within rock fractures and rock pores.
While two previous studies have linked earthquakes in the Raton Basin to wastewater injection wells, this is the first to show that elevated pore pressures deep underground are well above earthquake-triggering thresholds, said CU Boulder doctoral student Jenny Nakai, lead study author. The northern edges of the Raton Basin border Trinidad, Colorado, and Raton, New Mexico.
“We have shown for the first time a plausible causative mechanism for these earthquakes,” said Nakai of the Department of Geological Sciences. “The spatial patterns of seismicity we observed are reflected in the distribution of wastewater injection and our modeled pore pressure change.”
A paper on the study was published in the Journal of Geophysical Research: Solid Earth. Co-authors on the study include CU Boulder Professors Anne Sheehan and Shemin Ge of geological sciences, former CU Boulder doctoral student Matthew Weingarten, now a postdoctoral fellow at Stanford University, and Professor Susan Bilek of the New Mexico Institute of Mining and Technology in Socorro.
The Raton Basin earthquakes between 2008 and 2010 were measured by the seismometers from the EarthScope USArray Transportable Array, a program funded by the National Science Foundation (NSF) to measure earthquakes and map Earth’s interior across the country. The team also used seismic data from the Colorado Rockies Experiment and Seismic Transects (CREST), also funded by NSF.
As part of the research, the team simulated in 3-D a 12-mile long fault gleaned from seismicity data in the Vermejo Park region in the Raton Basin. The seismicity patterns also suggest a second, smaller fault in the Raton Basin that was active from 2008-2010.
Nakai said the research team did not look at the relationship between the Raton Basin earthquakes and hydraulic fracturing, or fracking.
The new study also showed the number of earthquakes in the Raton Basin correlates with the cumulative volume of wastewater injected in wells up to about 9 miles away from the individual earthquakes. There are 28 “Class II” wastewater disposal wells – wells that are used to dispose of waste fluids associated with oil and natural gas production – in the Raton Basin, and at least 200 million barrels of wastewater have been injected underground there by the oil and gas industry since 1994.
“Basement rock is typically more brittle and fractured than the rock layers above it,” said Sheehan, also a fellow at the Cooperative Institute for Research in Environmental Sciences. “When pore pressure increases in basement rock, it can cause earthquakes.”
There is still a lot to learn about the Raton Basin earthquakes, said the CU Boulder researchers. While the oil and gas industry has monitored seismic activity with seismometers in the Raton Basin for years and mapped some sub-surface faults, such data are not made available to researchers or the public.
The earthquake patterns in the Raton Basin are similar to other U.S. regions that have shown “induced seismicity” likely caused by wastewater injection wells, said Nakai. Previous studies involving CU Boulder showed that injection wells likely caused earthquakes near Greeley, Colorado, in Oklahoma and in the mid-continent region of the United States in recent years.