#Drought news April 6, 2023: #Snowpack SWE percentages = Lower Green 202%, Upper Colorado-Dolores 207%, and Upper Colorado-Dirty Devil 219%

Click on a thumbnail graphic to view a gallery of drought data from the US Drought Monitor website.

Click the link to go to the US Drought Monitor website. Here’s an excerpt:

This Week’s Drought Summary

This U.S. Drought Monitor (USDM) week saw continued widespread improvements on the map across areas of the western U.S. including in California, Nevada, Oregon, Idaho, and Utah. Overall, the areal extent of drought in the West dipped to 31% this week as compared to 73% at the beginning of the Water Year in early October. This week’s improvements reflected the impact of the recent storm events which continued to boost mountain snowpack levels to record, or near-record levels as observed at numerous Natural Resources Conservation Service (NRCS) SNOTEL monitoring stations across the Sierra Nevada, southern Cascades, eastern Great Basin, Wasatch, Uintas, and the southern and central Rockies. In California, the statewide snowpack was 243% of normal (April 5), with the Northern Sierra at 198%, Central Sierra at 242%, and Southern Sierra at 302%. Elsewhere in the region, the state of Utah is observing historic snowpack levels with the statewide snow water equivalent (SWE) at its highest level on record (April 5) at 211% of median, according to NRCS SNOTEL. In other regions, areas of the South (Texas) and the Southern Plains (Kansas, Oklahoma) saw further degradations on the map in response to a combination of short and long-term dry conditions, very low streamflow and reservoir levels, and reported impacts in the agricultural sector. In the High Plains, blizzard-like conditions and moderate to heavy snowfall accumulations were observed in the Dakotas during the past week as well as in areas of the Upper Midwest including northwestern Minnesota. In the Southeast, dry conditions and reports of deteriorating pasture conditions led to the expansion of severe drought areas in central Florida. Likewise, short-term precipitation deficits and increasing fire danger in areas of the Coastal Plain of North Carolina led to the expansion of areas of drought…

West snowpack basin-filled map April 5, 2023 via the NRCS.

High Plains

On this week’s map, changes were made including a slight expansion of an area of Exceptional Drought (D4) in central Kansas as well as one-category improvements in areas of Moderate Drought (D1) and Severe Drought (D2) in South Dakota in response to improving soil moisture conditions, snow cover, and above-normal precipitation during the past 30-90-day period in some areas. Currently, 50% of Kansas is depicted in the D3-D4 drought categories with 12-month precipitation deficits ranging from 4 to 16 inches. According to the latest USDA Kansas Crop Progress and Condition report (April 3), winter wheat conditions were rated 31% very poor, 26% poor, 27% fair, 14% good, and 2% excellent. In terms of topsoil moisture conditions (April 2, USDA), the percentage of topsoil moisture rated short to very short was 73% in Kansas and 56% in Nebraska. In the Northern Plains, blizzard-like conditions were observed during the past week bringing heavy snowfall to eastern Wyoming, northwestern Nebraska, and the Dakotas. According to NOAA NOHRSC, 72-hour snowfall accumulations as of April 5 ranged from 6 to 24 inches. For the week, average temperatures were well below normal with departures ranging from 5 to 25 deg. F below normal with the largest departures observed in North Dakota…

Colorado Drought Monitor one week change map ending April 4, 2023.


Out West, widespread improvements were made on the map including areas of California, Nevada, Oregon, Idaho, Utah, Montana, Wyoming, and New Mexico in response to excellent snowpack conditions across many of the drainage basins in the region. In California, the statewide snowpack (April 5) was 243% of normal, with the Northern Sierra at 198%, Central Sierra at 242%, and Southern Sierra at 302%. The California Department of Water Resources reported that the 2022-23 season will go down as one of the largest snowpacks on record in California. In Nevada and Utah, current SWE percentages of median for select basins are as follows: Central Lahontan 273%, Central Nevada Desert Basins 267%, Great Salt Lake 224%, Lower Green 202%, Upper Colorado-Dolores 207%, and Upper Colorado-Dirty Devil 219%, according to the NRCS SNOTEL network. In Arizona and New Mexico, snowpack levels are above normal, especially in the ranges of northern and central Arizona. In Arizona, the total reservoir system (Salt and Verde River system) is currently 100% full as compared to 72% full at the same time last year, according to the Salt River Project. For the Colorado River system, the U.S. Bureau of Reclamation is reporting (April 4) Lake Mead at 28% full and Lake Powell at 23% full…


In the South, a major outbreak of severe weather impacted portions of the region, including in the Mississippi and Tennessee valleys where numerous tornadoes touched down. The severe weather outbreak included strong thunderstorms with excessive rainfall, large hail, damaging winds, and violent tornadoes which impacted areas of Arkansas and Tennessee, leading to loss of lives and the destruction of homes and businesses. On the map, areas of drought intensified and expanded across areas of Texas and Oklahoma where precipitation deficits during the past 12-month period ranged from 8 to 20 inches in the most severely affected areas. According to the USDA (April 2), the percentage of topsoil moisture in Texas and Oklahoma that was rated short to very short was 72% and 63%, respectively. Moreover, numerous reservoirs in the western half of Texas were below normal levels, including the San Antonio River Basin reservoirs which are currently 5.3% full, according to Water Data for Texas. In terms of streamflow levels, areas of Oklahoma (northern and western) and Texas (Hill Country and South Texas Plains regions) observed 7-day streamflows in the <10th percentile range, according to the U.S. Geological Survey. For the week, average temperatures were above normal (1 to 8 deg. F) across the region with the greatest departures observed along the Gulf Coast and South Texas Plains…

Looking Ahead

The NWS WPC 7-Day Quantitative Precipitation Forecast (QPF) calls for moderate-to-heavy precipitation accumulations (including heavy snowfall accumulations) ranging from 2 to 7+ inches (liquid) across the Cascades of Oregon and Washington, Klamath Mountains, and Coast Ranges of northwestern California. Meanwhile, light accumulations are expected in the mountain ranges of eastern Oregon and Washington, central and northern Idaho, and across areas of the northern Rockies. Elsewhere in the conterminous U.S., heavy precipitation accumulations (2 to 5+ inches) are expected in the Gulf Coast region of Texas and the South, while the Southeast (excluding Florida) is forecasted to have light-to-moderate precipitation accumulations (2 to 4 inches). In isolated areas of the Upper Midwest and Northeast, light precipitation (<1 inch) is forecasted. The CPC 6-10-day Outlooks call for a moderate-to-high probability of above-normal temperatures across much of the conterminous U.S. with exception of areas to the west of the Continental Divide where cooler than normal temperatures are expected. Precipitation is forecasted to be above normal across Alaska, the Pacific Northwest, Intermountain West, the Plains states, and in Florida. Below-normal precipitation is forecasted across the South, Eastern Tier, and portions of the Midwest.

US Drought Monitor one week change map ending April 4, 2023.

Just for grins here’s a slideshow of US Drought Monitor maps for early April for the past few years.

The 2023 Secretarial #Drought Designations includes 455 primary counties and 244 contiguous counties as of March 29 — @DroughtDenise

For more info, please see the Emergency Disaster Designation and Declaration Process fact sheet at https://fsa.usda.gov/Assets/USDA-FSA-Public/usdafiles/FactSheets/emergency_disaster_designation_declaration_process-factsheet.pdf

Romancing the River: Tragicomedies of the Commons — Sibley’s Rivers #ColoradoRiver #COriver #aridification

Industrial pollution is one of the consequences of operators ignoring their effect on the shared environment. By Frank J. (Frank John) Aleksandrowicz, 1921-, Photographer (NARA record: 8452210) – U.S. National Archives and Records Administration, Public Domain, https://commons.wikimedia.org/w/index.php?curid=17100801

Click the link to read the article on the Sibley’s Rivers website (George Sibley):

In my last post, I was questioning the process of allowing the privatization of the commons through individual appropriations – in our specific instance here, privatization of the ‘water commons,’ but also of the land, and all of its living systems and the raw resources that must feed, water, shelter not just us but all life on the planet.

Every living thing that requires food, water, air or virtually anything at all ‘appropriates it from the commons,’ and probably in the strictest sense we all ‘create a property’ in the apples we pick to eat, the water we dip out of the stream to drink, the oxygen in the air we suck into our lungs. But we have not always gone on to claim personal ownership of the tree that produced the apple, or the land the tree grows on, the stream that waters the tree. That is a relatively recent invention of modern cultures – the agricultural and the industrial societies that we created when there came to be too many of us to support ourselves as hunter-gatherers living off the scattered abundance of the commons.

A contemporary writer-thinker who has considered our conduct in the commons is Garret Hardin, a 20th century American ecologist whose main concern as a scientist was the threat of overpopulation: a species (us) in swarming mode, but clever enough to stay a step ahead of the usual ‘natural’ controls – famine, plague, social breakdown and the Hobbesian ‘war of each against all.’ Hardin is best known, however, for a short excerpt, often found in high school and college texts, from a 1968 essay, ‘The Tragedy of the Commons.’

In the popular excerpt from ‘Tragedy,’ Hardin posed a grazing commons, used by a number of herdsmen. Being rational, Enlightenment individuals with a ‘natural’ desire to maximize their own self-interest through their labors, each herdsman desires to add another animal to his herd on the commons, even though he is aware that it might have a negative impact on the commons. The rational individual calculates, however, that he would get all the profit from his extra animal, while the cost to the commons would be spread among all the grazers. But with every user of the commons adding extra animals through that rational logic, the commons is over-grazed and destroyed.

One leader of the Scottish Enlightenment was Adam Smith, the father of modern economic science. By Etching created by Cadell and Davies (1811), John Horsburgh (1828) or R.C. Bell (1872).

This is the dark side of Enlightenment economist Adam Smith’s theory that economic individuals are driven by rational self-interest to engage in useful pursuits that will benefit their society as well as themselves, by meeting some societal need – a thesis embraced by most economists since Smith’s time (The Wealth of Nations was published in 1776).

The challenge of course is how to prevent the Enlightenment’s pursuit of individual self-interest from leading inexorably to Hardin’s ‘tragedy of the commons.’ Hardin saw the only alternatives to ecological catastrophe being either a) administration of the commons by the state or b) privatization of the commons according to the conventional wisdom of Aristotle: ‘Men pay most attention to what is their own; they care less for what is common.’ The choice between state management of what’s left of the commons, and further privatization by individuals, remains an area of open public conflict in the American West, with at least two bills before the current Congress proposing more creation from the commons.

But other modern thinkers have thought it through further – with work grounded in research, evidence collection, and other methods of the Scientific Revolution that preceded the Enlightenment. They discovered that there were (still are) many commons that have been used consistently without the users marching inexorably into Hardin’s tragedy – in some cases, in use for hundreds of years. They studied grazing commons, timber commons, fishing commons, water commons, and less tangible ‘commons’ like the air we breathe.

Foremost among these scientists is the late Elinor Ostrom, an American political scientist whose work in the study of commons was acknowledged in 2009 with a Nobel Prize in Economics. Her study of commons globally led her to observations about why some commons endured, even when used by individuals trying to maximize their own profit from their use, while individuals with the same motive degraded other commons.

Commons that succeeded over time, she found, were consciously managed locally by the users themselves, according to a set of rules generated, monitored and enforced uniformly bythe users. She did not find individual self-interest incompatible with successful commons management; it was only necessary for the individuals operating on a fragile commons to be able to persuade themselves and each other that even their short-term interests required the development of rules for avoiding the over-use of their commons. And if they kept the rule-making process close to home, they would be be able to build in elements of flexibility and local control sufficient to maintain the commons without losing their own sovereignty to external forces.

It became evident, to Ostrom and to other students of the commons, that this kind of commons management had to be locally generated rather than top-down from some external authority, and among people who had similar goals in living off the commons; a community with multi-generational stability, and a ‘belief commons’ as well would be more likely to succeed in conserving its physical commons if it chose to. Equally evident was the fact that it could never be a simple one-size-fits-all process; each commons and each community would have unique features.

The ‘water commons’ – the sum of our precipitation, surface waters, and groundwater – is our interest here, and the last two years bear mute testimony to its lack of predictability, which makes management of the commons difficult, no matter what system is employed.

San Luis People’s Ditch March 17, 2018. Photo credit: Greg Hobbs

The acequia system of land settlement, practiced by both the indigenous Mexican cultures and the Spanish invaders, only permitted settlement by communities of people, rather than by individuals under the ‘enlightened’ Euro-American model. Acequia systems essentially have ‘commons management’ by its users built into it. Everyone works to build and maintain the irrigation system, and the watered land under the ditch is divided as equitably as possible among parciantes, with the land above the ditch being mostly an undivided commons for grazing, ‘energy production’ (wood-gathering) and timber. The system is run by its users, with both surpluses and shortages shared evenly.

The ‘enlightened’ western American water appropriation system, on the other hand, is fundamentally antithetical to even the existence, let alone the intelligent management of a water commons. The Colorado Constitution, for example, seems to establish a public ‘commons’ in first declaring the ‘water of the streams public property’ – but then immediately stating that this public property is only the water ‘not heretofore appropriated’ – and the rest of the public property is ‘dedicated to the use of the people of the state, subject to appropriation… (and) the right to divert the unappropriated waters of any natural stream to beneficial uses shall never be denied.’

Once the right to use the water has been appropriated, there is not only no encouragement to share the burden of bad years, it is actually operating outside the law to do so; the law enforces the right of the senior appropriators in a system to get all of their water, even if it dries up junior appropriators to do so. This institutes a ‘first come, first served’ system that is more competitive than cooperative.

Theoretically, the users are only appropriating the right to use the water, not the water itself, and only for so long as they actually puts the water to use. But somehow that ‘right to use’ has become a property that can be sold or bought just like any more tangible personal property. And a new owner of the ‘right to use’ can file for a change of use, then move the right to use the water and the water anywhere he or she wants along with the seniority of the right.

Delph Carpenter’s 1922 Colorado River Basin map with Lake Mead and Lake Powell shown. The two giant reservoirs have always been part of the governance of the river.

All western states in the arid region have basically the same appropriation system, with variations mostly in administration. Thus, throughout the Colorado River region, water that was appropriated and privatized for agricultural use in one place can (after a change of use) water suburban growth a couple hundred miles away in the same state – a situation facilitated by the fact that the state boundaries bear no relation to any geographic realities like watersheds. Up to five million acre-feet of water leave the Colorado River’s natural basin every year for agricultural and municipal uses outside the basin – 40 percent of the river’s water. This ‘flexibility’ of ownership, on top of its ‘first come, first served’ energy, makes the appropriation process a powerful engine for growth, but with not much of a sense of a water commons.

Which brings us more or less back to the present, where we are at something of an impasse over what passes for our water commons. The seven Colorado River Basin states are confronted with the need for a huge ‘reality adjustment’ in the way the river has been operated over the past century: essentially we must – beginning this year – abandon the magical thinking of the Early Anthropocene and cut the overall consumptive use of the river by at least two million acre-feet.

Six of the seven states have constructed a draft plan that would apportion cuts close to two million acre-feet to meet this emergency equitably among all the states – not ‘equally,’ but equitably, cleaning up some mistakes from the past, like the Lower River states ignoring a million and a half acre-feet of annual evaporation. But the seventh state, California, is holding out for strict administration of the appropriation law, which would mean they would get most of their usual allotment, 4.4 million acre-feet (minus 400,000 they are willing to put into the kitty), and Arizona, Nevada and the four Upper River states, all with water rights mostly junior to California’s, would bear the rest of the burden.

Arguments can be made both ways: the importance of the primacy of the rule of law, versus an emergency situation that the law as (mis)administered cannot resolve. I am personally of the latter persuasion (in case you hadn’t noticed), and believe the appropriation laws for water, as they have evolved, might be more part of the problem than part of the solution at this point.

There is a little-discussed fact about appropriation law and seniority rights as it is actually practiced in bad years down on the ground, at least here in the headwaters of the Upper River. That is the fact that agricultural users, at the local level, don’t like to place ‘calls’ on their neighbors in hard times – a ‘call’ being a demand by a senior user that upstream juniors let the water go by until his right is completely fulfilled.

Downstream senior users will place a call when an upstream junior is being blatant in his or her disregard for priority in a time of relatively normal flows, to bring the offender in line. But in a dry year, which is no one’s fault, farmers and ranchers who have drawn water from the same stream for years – sometimes for generations – tend to not insist on rigorous apportionment of water according to seniority, but instead sit down together and figure out how to move whatever water is available around so that everyone gets enough to avoid dead perennials and maybe get a partial crop on their best land.

The ranchers here call these ‘gentlemen’s agreements’: ad hoc measures in which humans respond to nature’s random assaults the way anthropologists show us we did for our first million or so formative years, fragile bands wandering the generally unaccommodating steppes of the Pleistocene ice ages: working it out together. Self-interest served rationally through cooperative action.

These informal agreements beyond the law seem to fit with Elinor Ostrom’s observed ‘rules’ for the long-term management of commons; ‘gentlemen’s agreements’ only seem to work at the local level where users know each other, have transcended the abstract fear that he-she-they want my water, and know that rational self-interest in living a reasonably peaceful and productive life requires some neighborly accommodation to each other’s needs, whether one loves the neighbors or not (although serious neighborhood feuds can preclude a gentlemen’s agreement).

Herbert Hoover presides over the signing of the Colorado River Compact in November 1922. Members of the Colorado River Commission stood together at the signing of the Colorado River Compact on November 24, 1922. The signing took place at the Palace of the Governors in Santa Fe, New Mexico, with Secretary of Commerce Herbert Hoover presiding (seated). (Courtesy U.S. Department of Interior, Bureau of Reclamation)

‘Gentlemen’s agreements’ have not, however, worked when ‘upscaled’ to the state or regional level. Consider the Colorado River Compact: the seven states gathered in 1922 for the expressed purpose of dividing the consumptive use of the river’s water seven ways beyond the appropriation laws. Each state would continue to observe appropriation laws intrastate, but not interstate; they wanted a gentlemen’s agreement that fast-growing California would not be allowed to appropriate most of the river before slower-growing states really got started, and California wanted the other states to support a big-dam project on the mainstem. But either despite their rational self-interest, or on account of it, they were unable to develop that equitable apportionment. The reason they couldn’t is obvious enough from looking at the Compact meeting transcripts: the Compact commissioners were arguing from fantasies about their future development, and they would neither accept each others’ fantasies nor downsize their own, and they would have needed half again more water than even the Bureau of Reclamation’s optimistic fantasies about the river’s actual flow.

But are we now at a sufficiently different place so that the river’s reality might prevail over magical thinking? We now know how much water there actually is in the river, and approximately how much less there will be as the temperatures continue to rise; we can see that the growth energy inspired by ‘first come, first served’ is the last thing we need in the Southwest today; we are aware what a general tangle the fantasies, omissions, ambiguous language and contradictions of the Compact and the subsequent ramshackle Law of the River have created – and we know we are only a couple really bad snow years from a ‘dead pool’ status where no one below Hoover Dam gets any water at all. We know we have to come up with some kind of consensual agreement now, not after another decade in court.

Can the seven states come to the table, leaving all our fantasies of the future behind, face these realities, and come to a gentlemen’s agreement that will get us at least through the next several years with the requisite major cuts in use? While we are trying to forge some new compact that does what the last one failed to do?

The Tomichi Water Conservation Program involves regional coordination between six water users on lower Tomichi Creek to reduce consumptive use on irrigated meadows as a watershed drought management tool. The project will use water supply as a trigger for water conservation measures during one year in the three-year period. During implementation, participating water users would cease irrigation during dry months. Water not diverted will improve environmental and recreational flows through the Tomichi State Wildlife Area and be available to water users below the project area. Photo credit: Business for Water.

If the ranchers on Tomichi Creek can do it up here in the headwaters….

‘The essence of dramatic tragedy is not unhappiness.
It resides in the solemnity of the remorseless working of things.’

– Alfred North Whitehead

Map credit: AGU

Continued below-average precipitation reduces #groundwater levels, report shows — University of #Nebraska-Lincoln

Researchers with the University of Nebraska-Lincoln take groundwater samples from the Loup River in the Sandhills of Nebraska in September 2018. By sampling groundwater and determining its age, they hope to determine whether predictions for groundwater discharge rates and contamination removal in watersheds are accurate. Photo credit: Troy Gilmore

Click the link to read the article on the University of Nebraska-Lincoln website (Aaron Young):

Groundwater levels have declined in most of Nebraska following multiple years of below-average precipitation, University of Nebraska–Lincoln scientists found in a new statewide analysis. About three-quarters of the 4,787 observation wells across the state experienced groundwater level declines during 2021-22.

The Conservation and Survey Division, the natural resource survey component of the School of Natural Resources, compiled the findings in its latest groundwater level report.

For most of the observation wells, the net change in groundwater level was less than 20 feet since predevelopment times — before the widespread use of groundwater for irrigation.

Nebraska still retains a relatively abundant share of the High Plains aquifer system, in contrast to the situation in areas such as western Kansas and northern Texas, where the depletion of the aquifer has been severe, with major negative consequences for local agriculture.

But the survey’s findings highlight the direct negative effects that prolonged below-average precipitation can have on groundwater levels. During the 2020-21 period, 96% of weather reporting stations in Nebraska (166 out of 172) reported below-average precipitation. During the 2021-22 period, 68% of the stations (122 of 179) reported precipitation levels below the 30-year average.

The below-average precipitation values, combined with increased need for irrigation water to maintain crop yields, resulted in groundwater-level declines of more than 10 feet in some parts of the state, university scientists found.

“Changes in groundwater levels in Nebraska are largely dependent on annual fluctuations in precipitation,” said Aaron Young, survey geologist with the School of Natural Resources. “The hotter and drier a growing season is, the less water is available for aquifer recharge, and more water is required for supplemental irrigation of crops, resulting in groundwater-level declines.”

In contrast, wetter years mean that less supplemental irrigation water is required and more water is available for aquifer recharge.

Nebraska’s recent groundwater-level declines are concerning, Young said, in that some wells may need to be drilled deeper if drought conditions persist.

Although Nebraska has, on average, not seen declines in groundwater levels like those seen in Kansas or Texas, the degree of groundwater level change in Nebraska since predevelopment has varied greatly among individual areas, ranging from increases of more than 120 feet to declines of about 130 feet. For most of the state, the net change in groundwater level since predevelopment times has been less than 20 feet.

Parts of Chase, Perkins, Dundy and Box Butte counties, in contrast, have experienced major, sustained declines in groundwater levels due to a combination of factors. Irrigation wells are notably dense in these counties, annual precipitation is comparatively low, and there is little or no surface-water recharge to groundwater there.

The Conservation and Survey Division report was authored by Young and University of Nebraska–Lincoln colleagues Mark Burbach, Susan Lackey, Matt Joeckel and Jeffrey Westrop.

A free PDF of the report can be downloaded here. Print copies can be purchased for $7 at the Nebraska Maps and More Store, 3310 Holdrege St. Phone orders are accepted at 402-472-3471.

Nebraska Rivers Shown on the Map: Beaver Creek, Big Blue River, Calamus River, Dismal River, Elkhorn River, Frenchman Creek, Little Blue River, Lodgepole Creek, Logan Creek, Loup River, Medicine Creek, Middle Loup River, Missouri River, Niobrara River, North Fork Big Nemaha River, North Loup River, North Platte River, Platte River, Republican River, Shell Creek, South Loup River, South Platte River, White River and Wood River. Nebraska Lakes Shown on the Map: Harlan County Lake, Hugh Butler Lake, Lake McConaughy, Lewis and Clark Lake and Merritt Reservoir. Map credit: Geology.com