KQED has posted on their website an excellent primer on how water and power use in California are connected. Engaging cartoons convey how Water Needs Power, and how producing Power Needs Water. These short cartoons are the most effective communication tools I’ve ever seen on this subject.

For those who like to consume their information on California water in a more-voluminous, less-artistic, more-policy-oriented way, in December the Pacific Institute released its California Water Footprint report. Full of graphs and detailed information about water use, in this report you can learn things such as: meat and dairy products account for 47% of California’s water footprint, or 93% of California’s water (that is used to produce goods and services) is used to produce agricultural goods and services.

After an average fall, precipitation-wise, we recorded double the average December precipitation in Lee Vining. Between October 1st and the end of December, we have measured more snow (34.5″) and precipitation (6.5″) than during all of last winter! This represents about 50% of the average annual total.

Snow blankets the Mono Lake Committee's storefront on December 26, 2012. Photo by Bartshe Miller.

For years with similar wet Decembers (1992, 1996, 2002, 2005, 2010), the following runoff year had close-to-average or (more…)

The October 1, 2011 to September 30, 2012 water year recently came to a close. Happy new 2013 water year!

What is a water year?
It is said that hydrologists get to celebrate a new year at least four times a year—January 1st for a calendar year, April 1st for a runoff year, July 1st for a coastal California rainfall year (as well as a fiscal year), and October 1st for a water year. Needless to say, this creates challenges in organizing hydrology data.

Here in the Mono Basin, we typically use the runoff year to summarize most measurements involving stream flows, since (more…)

Thanks to recent efforts of California Trout, a video of part one of Elden Vestal’s November 3, 1993 deposition is now on YouTube. You can watch the hour and forty-seven minute video here on the Mono Basin Clearinghouse.

Watch the YouTube Video of Elden's 1993 historical testimony here!

Elden was a California Department of Fish & Game Fisheries Biologist whose deposition was instrumental (more…)

The summer of 2012 was hot. But how hot? As we celebrate the Autumnal Equinox and the end of summer, let’s take a look back and see how the weather this year (so far) compared to previous years. Our focus is on temperatures—every month this year has had above-average temperatures. In October, we will summarize the meager precipitation and snowfall that fell during the dry October 1, 2011–September 30, 2012 Water Year. (more…)

This summer is turning out to be drier than expected. Preliminary data for April–July show Lee Vining Creek runoff is about 1,000 acre-feet short of the 17,900 acre-feet (53% of average) forecast, Rush Creek runoff about 2,000 acre-feet short of the 23,400 acre-feet (49%) forecast, and Parker Creek runoff about 600 acre-feet short of the 3,400 acre-foot (62%) forecast. Only Walker Creek appears to be on target with its 1,300 acre-foot (42%) prediction—notably the lowest forecast of the four creeks. (more…)

Each May, the Los Angeles Department of Water & Power (DWP) submits its annual compliance report to the State Water Resources Control Board. This report contains not only compliance reporting, but the reports from the previous year’s lake and stream monitoring.

Some highlights from the 2011 monitoring include:

• Brine shrimp abundance peaked at over 40,000 shrimp per square meter for seven of the last eight years. This level was only exceeded in five other years during the 1980s (monitoring began in 1982). But it has happened almost every year since 2004.
• The “centroid” of the brine shrimp distribution over time has peaked earlier and earlier each year—as Mono Lake’s salinity has declined, the shrimp have (more…)

As of April 1, the winter precipitation in Lee Vining added up to 45% of average, and Mono Basin snowpack measured 47% of average. The forecast for April–July runoff is 50% of average.

An average March for precipitation in the Mono Basin brought to an end the 2011 Runoff Year (April 1, 2011–March 31, 2012). The preliminary runoff total for last year is 142% of average. (more…)

The March 1st snow surveys in the Mono Basin found 33% of average snow water content to date. This is only 28% of the April 1st average, when the snowpack usually peaks. There is still much less snow in the Rush Creek drainage:

Rush Creek March 1 2012 snow course water content
Gem Pass 7.9″ (6.7 in 1977, 2.0 in 1991)
Gem Lake 7.4″ (4.8 in 1977, 3.4 in 1991)

Lee Vining Creek March 1 2012 snow course water content
Tioga 8.6″ (7.5 in 1931, 8.2 in 1976, 7.6 in 1977, 0 in 1991)
Saddlebag 9.0″ (7.1 in 1977, 3.2 in 1991)
Ellery 8.8″ (8.2 in 1976, 7.0 in 1977, 2.6 in 1991)

Based on these snow surveys, April–July runoff for the Mono Basin has been forecasted at 39% of average. This is an average (more…)

In January Mono Lake rose 1/4 foot, and it has continued rising at a slower rate in February to today’s level of 6383.9 feet above sea level. This brings it to within 0.06 feet of the mid-August 2011 highpoint (the highest level since 2007). It should keep rising for another month before it begins dropping in April due to the dry year. Dave Marquart with the Mono Lake Tufa State Natural Reserve says he will probably have to reroute a section of the South (more…)