Posts Tagged: water-use
California water-rights holders are required by state law to measure and report the water they divert from surface streams. For people who wish to take the water measurements themselves, the University of California Cooperative Extension is offering in-person training to receive certification on Nov. 6 in Davis.
At the workshop, participants can expect to
- clarify reporting requirements for ranches.
- understand what meters are appropriate for different situations.
- learn how to determine measurement equipment accuracy.
- develop an understanding of measurement weirs.
- learn how to calculate and report volume from flow data.
The training is scheduled for 9 a.m. to 12:30 p.m. on Nov. 6 at the UC Agriculture and Natural Resources building at 2801 2nd Street in Davis.
“We are limiting the number participants for the water measurement training to 30 people per session,” said Larry Forero, emeritus UC Cooperative Extension livestock and natural resources advisor. “If you need this training, please register soon.”
Registration is $30 and pre-registration is required. To register, visit https://surveys.ucanr.edu/survey.cfm?surveynumber=32393. If you have questions, email Forero at firstname.lastname@example.org or Sara Jaimes at email@example.com or call (530) 224-4900.
Senate Bill 88 requires that all water right holders who have previously diverted, or intend to divert, more than 10 acre-feet per year (riparian and pre-1914 claims); or who are authorized to divert more than 10 acre-feet per year under a permit, license or registration; to measure and report the water they divert. Regulatory requirements for measurement and reporting are available on the State Water Resources Control Board Reporting and Measurement Regulation webpage. The legislation requires that installation and certification of measurement methods for diversion (or storage) greater than or equal to 100-acre feet annually be approved by an engineer/contractor/professional.
California Cattlemen's Association worked with Assemblyman Bigelow to allow a self-certification option. Assembly Bill 589, which became law in 2018, allows any water diverter who completes this UC Cooperative Extension course on measurement devices and methods (including passage of a proficiency test) to be considered a qualified individual when installing and maintaining devices or implementing methods of measurement.
‘Ag Order' for San Diego County expected to be enforced by end of 2023
Generally known for its steady warmth and picturesque beaches, San Diego County is also home to nearly 5,000 small farms and is an economic hotspot for nurseries and floriculture. But the great diversity of ornamental crops that dominate the growing region and complexity of regulations make compliance challenging for growers, some of whom grow over 400 crop varieties.
“The regulatory environment for the growers is still complicated and overwhelming because, along with the Regional Water Board, growers are regulated by the County of San Diego,” said Gerardo “Gerry” Spinelli, University of California Cooperative Extension production horticulture advisor for San Diego County.
To help growers with compliance, Spinelli is prioritizing education and expanding growers' knowledge. By partnering with organizations such as the Farm Bureau of San Diego County and the San Diego Region Irrigated Lands Group, Spinelli works to reach more than 1,200 growers, supporting them as they navigate regulatory agencies.
Formally referred to as the Regional Water Quality Control Boards, the Regional Water Board aims to develop and enforce water quality objectives and implement plans to protect the beneficial uses of California's waters.
A unique place to grow in California
About 10 years ago, the Regional Water Board created the Agricultural Order (Ag Order), a set of rules outlining how growers manage water discharge from agricultural operations.
The new Ag Order for San Diego County, expected to be enforced by the end of 2023, will focus on nitrogen management and groundwater quality. However, new considerations are needed to address the variety of crops grown by a single farmer, a common practice in San Diego.
Calculating nitrogen input and output for more than 400 crop varieties is not feasible for small farmers, a challenge exacerbated by the meticulous attention needed for San Diego's high-end specialty crops like ornamentals, native plants and specialty fruit.
Furthermore, many San Diego growers have limited expertise and experience because they are entering agriculture as a second or third career. Many have become “accidental growers” in that they purchased land with a preexisting avocado or cherimoya grove, for example.
To help address these challenges, the grower community is emphasizing the need for more educational opportunities that are accessible and relatable.
Equipping growers through education
Enrico Ferro, president of the San Diego Region Irrigated Lands Group – a third-party entity that manages water sample testing on behalf of growers – has relied on Spinelli's teaching to “bridge the gap” for growers, including himself.
“Gerry has been great because he has expertise in nurseries, but the educational content he creates is relevant to all growers,” said Ferro, who is an avocado and citrus grower in San Diego's North County.
Spinelli, who specializes in containerized production in nurseries and floriculture, has been instrumental in providing technical assistance to growers since he joined Cooperative Extension in 2020.
“I started teaching over Zoom since I became an advisor during the pandemic, and I try to cover different topics for each training,” Spinelli said, adding that he teaches in English and Spanish, making his content more accessible to the grower community in San Diego.
For in-person educational opportunities, Spinelli created the “Last Wednesday” monthly meetings hosted at the Farm Bureau of San Diego County, which brings together growers and other agricultural experts to learn from one another.
“We try to get our information out in creative ways and Gerry is instrumental in that. He's our primary source of really wonderful information delivered in an engaging way,” said Tasha Ardalan, program coordinator for the SDRILG. “He's proactive and is always willing to try new things, too.”
Planning for San Diego's agricultural future
Currently, the Ag Order is modeled around regulations for the Central Valley. As conversations and planning for San Diego County continue, Spinelli is supporting the Regional Water Board with information on nurseries and greenhouses in hopes that the final Ag Order will better serve San Diego growers.
“I'm trying to help others understand how nursery and greenhouse production systems function, and how and why they are different from an almond orchard or tomato field in Fresno,” explained Spinelli.
Michael Mellano, CEO of Mellano & Company, a fresh cut flower grower and distributor in Oceanside, feels the impact of the Ag Order and its failure to account for variability. Growing over 100 varieties of flowers, Mellano said that for several plants there is little scientific research on how much nitrate to apply.
“Farmers want to do a good job. We make mistakes and we try to fix them as quickly as we can, and we try to educate others on what works,” said Mellano, who is also a member of the SDRILG.
Growers like Mellano and Ferro agree that the farming community in San Diego needs to be given the latitude to solve problems within their means, an ability that requires an understanding of San Diego's uniqueness.
“San Diego is significantly different, and we need an Ag Order that is reflective of our differences,” said Valerie Mellano, SDRILG consultant and former UCCE environmental issues farm advisor. “In developing the new Ag Order, there's a huge opportunity for education and research, something that we know Gerry can easily do and continue to support us in.”
Thus far, Spinelli's educational content has reached two-thirds of SDRILG's 1,200 members. In addition to the live training sessions, growers can watch videos that cover topics such as evapotranspiration, irrigation distribution uniformity, water quality indicators and more on Spinelli's YouTube channel.
Since the Ag Order requires all growers to complete two hours of water-quality education, the SDRILG has agreed to apply one hour of credit to growers who attend a one-on-one session with Spinelli.
As San Diego's growers continue to leverage educational opportunities – whether it's alongside Spinelli, SDRILG or learning from one another – Spinelli emphasized that their success also relies on an ag order that adheres to a distinctive landscape, multitude of specialty crops and growers with varying expertise.
Study: Climate impacts widespread across California, fueling worries over water supply
As water system managers across California devise strategies to help secure their water supply, they often face a major obstacle to implementing those measures: a lack of interest or will to act among community members.
“One of the things that the literature has found is that even if water system managers and local decisionmakers are really worried about climate change and water security, a lot of the adaptation strategies that they have in their toolbox actually require support from residents,” said Kristin Dobbin, a UC Cooperative Extension specialist focused on water justice planning and policy.
Because popular support is essential for realizing many water-related adaptations – from changing the rate structure to approving bonds for new infrastructure – Dobbin and her colleagues recently published a paper looking deeper at residents' experiences of, and concern about, climate impacts to household water supply.
Through a drinking water-focused portion of a long-term panel survey administered by California State University, Sacramento, scholars in the Household Water Insecurity Experiences research network had the opportunity to query Californians on how they are experiencing the climate crisis at their taps. Specifically, the researchers sought to analyze respondents' perceptions of future climate risks to water security.
“As a group that studies drinking water access in California, we're often looking at the system level and community level,” said Dobbin, based at the UC Berkeley Department of Environmental Science, Policy and Management. “So it was exciting to dive into the household level and understand what's happening at a more individual level.”
Climate impacts seen ‘up and down the state'
The statewide survey, conducted in spring 2021, elicited 704 responses from the panelists, representing every census region in the state and nearly every county. More than one-third (34%) of respondents said that their water supply had been affected by an extreme weather event in the past five years. Given the timing of the survey, drought was unsurprisingly the most frequently mentioned impact. Importantly, these climate impacts were felt across California.
“There is an inclination to assume that drought and other impacts are a geographically bounded issue, but what we really see is that is not the case,” Dobbin said. “These impacts are happening up and down the state, all the way to the Oregon border.”
Overall, 85% of respondents reported that they were concerned about the long-term reliability of their water supply. Crucially, the study also indicated that residents were making the connection between climate impacts and risks to their future water security.
“The more impacts they reported, the more concerned they were about future supply and reliability,” said study co-author Amanda Fencl, a senior climate scientist with the Union of Concerned Scientists.
Droughts and heat waves, in particular, seem to increase residents' concerns over water supply the most. Dobbin suggests that framing the need for water-security adaptation strategies around those specific weather events could be particularly useful in marshaling community support.
Knowing the level of concern within the community – and understanding the best way to convey the urgency of climate adaptation measures – could be a boon for local managers seeking to gain public backing for more expensive water projects. Such projects might include self-sufficiency measures that reduce reliance on imported water from other parts of the state.
“That could bolster some water managers to have more confidence in using climate change and extreme events as a way to motivate ratepayers to get on board with these bigger investment decisions,” Fencl said.
Study highlights avenues for more research
While flooding barely registered as a climate impact in the 2021 survey results, Dobbin said that the responses would likely be very different today, after atmospheric rivers inundated the state this past winter. Floodwaters can damage water treatment plants – and storms can knock out power to private wells and larger water system treatment and distribution facilities.
In fact, from the 2021 survey, power outages due to utilities' wildfire prevention policies were the climate impact most frequently mentioned in the “other” category, highlighting for researchers the need to consider and plan for the interconnectedness of water and power systems.
“People forget about the interplay between a reliable electric grid and the ability to run water in your house and the ability for water systems to pump and treat water,” Fencl explained. “When we think about disaster response and disaster preparedness, we need to be a bit more holistic.”
The researchers also pointed to significant differences in experiences of climate impacts across gender and racial demographics, with Latino, Asian American Pacific Islander and LGBTQ+ respondents reporting higher rates of impacts. Given the relatively small sample sizes, however, Fencl said there needs to be larger – and more inclusive – surveys to get a clearer picture of those disproportionate impacts.
Even still, Dobbin added that their study serves as a reminder for scholars, water managers and policymakers to re-center community members, in all their diversity, as key players in the push for more effective and sustainable climate adaptation strategies.
“One of the takeaways from the paper is that we can't forget about the role of the public in this conversation – and we can't bypass the public,” Dobbin said. “The bottom line is that most of the adaptations that we have available to us require some level of residential involvement.”
In addition to Dobbin and Fencl, authors of the study, published in the journal Climatic Change, include Gregory Pierce, UCLA Luskin Center for Innovation; Melissa Beresford, San Jose State University; Silvia Gonzalez, UCLA Latino Policy and Politics Institute; and Wendy Jepson, Texas A&M University./h3>/h3>/h3>
Ibrahim Yaaseen, member of the Palos Verdes Peninsula (PVP) 4-H club, grabs a hard hat and places it on top of his head. He then reaches for a bright orange safety vest and goggles to complete his safety gear outfit before joining the rest of his club members who are dressed the same.
The 4-H Youth Development Program of Los Angeles is already thinking about the future of water management and turned to the West Basin Municipal Water District in El Segundo to gain a deeper understanding of the precious resource we often take for granted.
The University of California 4-H Youth Development Program is managed through local Cooperative Extension offices. Through hands-on learning experiences, 4-H empowers youth to reach their full potential and enables them to build self-esteem, connect with their community and emerge as leaders.
Dee Keese, community club leader for the PVP 4-H club, coordinated an exclusive and interactive tour of West Basin's Edward C. Little Water Recycling Facility for the club's monthly marine biology meeting in December 2022.
Eager to inspire a stronger appreciation for water, Janel Ancayan, the West Basin's education coordinator, challenged the youth to build their own water filters using materials including fabric, a strainer, and a funnel. Since no specific directions were given, the activity challenged each student's science and engineering skills, such as carrying out an investigation, designing a solution, and communicating information with team members.
During the tour, students saw firsthand the impressive equipment and essential staff members that help to produce nearly 40 million gallons of recycled water each day. At the end of the day, students left with a deeper understanding of water resources and felt empowered to do their part to conserve water sources.
“We learned that recycling water helps to conserve our limited water supply and improves the environmental condition of our coastal waters,” said Yaaseen. “We ultimately learned a great deal about how to conserve water for future generations and that water conservation is one of the most important elements in combating climate change.”
Though Keese has volunteered as community club leader for 48 years, this is only the second time she has partnered with the West Basin. “I like to mix it up,” she said. “I'm always looking for community organizations and local businesses to partner with because these are places that the kids will likely interact with since they're nearby.”
Regardless, it's leaders like Keese and programs like 4-H that encourage water stewards like Ancayan. “I'm always so humbled and inspired when teachers make it a point to come out and visit our facility. In Southern California especially, [water] is not something we think about,” Ancayan said.
Even in a drought, water continues to flow from our faucets allowing us to shower, wash dishes or water the lawn. It's no wonder why water conservation is not always top of mind, especially for consumers. Educating the public, and targeting the younger generation, however, is a great start to prepare for the future.
West Basin offers a variety of educational programs that focus on different age groups. Many of them involve hands-on learning like the Teach and Test volunteer program, a partnership with the Surfrider Foundation, where high school students test samples of coastal water for bacteria, and then publicly share their findings to contribute to water quality monitoring in the area.
According to Yaaseen, the time spent with Ancayan at the West Basin was “one-of-a-kind” and provided a “golden opportunity” to learn why water recycling facilities are important. Ancayan hopes that her time spent with students ultimately influences them to consider a career in water.
“It's not a glamorous job but I'm really passionate about the next generation of water workers,” she said. “I hope that once they see the engineering, the excitement of these scientists that work in our laboratory and everything in between, that they start to think about water as a future career path.”
For those interested in joining 4-H, visit https://4h.ucanr.edu/Members/
To read this story in Spanish, please visit:
Programas 4-H de Los Ángeles forman a la futura generación de administradores de los recursos hídricos
UC climate-ready landscape trials identify low-water yet attractive plants
Good news: roses can be a part of your water-efficient landscape. Lorence Oki, UC Cooperative Extension environmental horticulture specialist in the UC Davis Department of Plant Sciences, identified rose cultivars that remain aesthetically pleasing with little water.
Oki is the principal investigator of the Climate-Ready Landscape Plants project, which may be the largest irrigation trial in the western U.S., and the UC Plant Landscape Irrigation Trials (UCLPIT), the California component of that project. These projects evaluate landscape plants under varying irrigation levels to determine their optimal performance in regions requiring supplemental summer water.
“There are some assumptions that pretty plants use a lot of water, like roses,” Oki said. “Everyone thinks they need a lot of water, but we've found some that don't, and they still look great. A water-efficient landscape doesn't need to look like a Central Valley oak-grassland in the summer. It can look really attractive.”
In 2021, Oki's team at UC Davis identified Lomandra confertifolia ssp. pallida "Pom Pom" Shorty and Rosa "Sprogreatpink" Brick House® Pink as two of the best low-water plants in the trial.
“The useful tip or information that is shared at the end of each trial is the selection and designation of plants as Blue Ribbon winners. These are the plants that looked good with an overall rating of 4 or higher throughout and were on the low (20%) water treatment,” said Natalie Levy, associate specialist for water resources, who manages the project at the UC ANR South Coast Research and Extension Center.
How plants earn a blue ribbon
Each trial year, the selection of new plants is based on research recommendations and donated submissions from the nursery industry. The landscape plants are trialed in full sun or 50% shade cover.
Irrigation treatments are based on the rate of evaporation and plant transpiration (evapotranspiration) measured through a local California Irrigation Management Information System (CIMIS) weather station that provides a reference evapotranspiration (ETo) rate.
Three levels of irrigation are provided to the plants equal to 20%, 50%, and 80% of ETo. The volume of water applied is the same at each irrigation based on soil characteristics, but the interval between applications varies with weather and the treatment. Using this method, irrigations for the 20% treatment are less frequent than the 80% treatment.
“The 20% treatment during the 2022 trial was irrigated an average of once per month while the 80% treatment was irrigated weekly,” explained Levy.
During the deficit irrigation trial, monthly height and width measurements are taken to determine the plant growth index. Monthly qualitative aesthetic ratings on a scale of 1 to 5 are determined for foliage appearance, flowering abundance, pest tolerance, disease resistance, vigor and overall appearance.
A second round of flowering abundance and overall appearance measurements are also taken to capture more of the blooming period. For example, UCLPIT identified in the 2020 trial at South Coast REC that the "Apricot Drift" rose had a mean overall appearance score of 3.5 out of 5, deeming it “acceptable to very nice” and a low water use plant within the Water Use Classification of Landscape Species or WUCOLS guide.
Project expands options for landscape planting
“(WUCOLS) only has 3,500 plants in it. There are guesses that there are close to 10,000 cultivars in urban landscapes in California, if not more,” said Oki. “WUCOLS also didn't have numerical ratings. Instead, you'll see verbal ratings like ‘low water use' or ‘high water use.'”
The UCLPIT project has not only developed numerical recommendations for irrigation, but it has also added new landscape plants that are compliant with California's Model Water Efficient Landscape Ordinance. In fact, UCLPIT's data is one of the few sources that can be used to supplement WUCOLS.
Geographic diversity of trial sites adds to knowledge base
In addition to UC Davis and South Coast REC in Irvine, the trials have expanded beyond California as the Climate-Ready Landscape Plants project and is in progress at Oregon State University, University of Washington, University of Arizona and Utah State University thanks to a USDA/CDFA grant awarded in 2020.
Lloyd Nackley, associate professor of nursery production and greenhouse management at Oregon State University, is the principal investigator of the trial in the Portland metro area, which is entering its third year.
“People know that there are drought tolerant plants, but there are many. We're trying to highlight lesser known or newer varieties. And even though the trial is three years, most gardeners would hope that their garden lasts longer than that,” said Nackley.
One of the observations that Nackley recalls is of the Hibiscus Purple Pillar plant. Unlike the trial at South Coast, the Purple Pillar did not perform well in Oregon in the spring.
“It wasn't until August that we saw the plant bloom and begin to look like what we saw from South Coast in April,” Nackley said.
Ursula Schuch, horticulture professor and principal investigator of the trial taking place at the University of Arizona, was also surprised at the range of performance among different plant types and the effects of irrigation, heat and temperature.
“This research will reassure green industry professionals that they can stretch their water budget to successfully cultivate more plants, watering them according to their needs instead of irrigating every plant according to the highest water-using plants,” said Schuch.
Although research is only conducted in the West, the hope is that there will be trials in other regions of U.S.
Doing so would yield comprehensive information about the plants and their performance in different climates. As extreme weather events persist in the U.S., disease pressure and risks do too. Trials throughout the country would provide location-specific data regarding disease susceptibility.
To learn more about the UCLPIT research project, visit https://ucanr.edu/sites/UCLPIT//h3>/h3>/h3>/h3>