Tag Archive for: Water Supply

Opinion: California’s Water Department Must Face the Reality of Climate Change and Diverse Needs

/in , /by /Sacramento Beeby Bill Dodd

As we enter a new decade, California faces increasing environmental challenges caused by climate change, creating an uncertain future for our water resources. We need bold leadership to address these impacts. It is time for California’s Department of Water Resources to implement water policy for the state that shores up our precious waterways and diversifies water supplies in the face of these imminent threats.

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Set yourself up for landscaping success by building the best foundation in your soil structure. Photo: walkersalmanac/Pixabay healthy soil

Take a Test to Determine Your Soil Type

/in , /by

If you put a shovel into the ground in San Diego County, you are likely to encounter the region’s impermeable soil structure. Impermeable soils are defined by poor infiltration areas. This means water doesn’t flow through the soil to replenish groundwater, because the soil is too dense.

Having impermeable soil also means water does not soak evenly into the ground or flow through living soil to plants in a healthy way. No matter where you plan your landscape, you should concentrate on improving your soil structure. That will help you irrigate more efficiently and cost-effectively, and your plants will receive the nutrients and water they need to flourish. It is relatively easy to improve your soil structure, but first you need to determine what kind of soil you have.

Particle size matters

The three basic types of soil are:

Clay: Soil made up of the smallest particles
Silt: Soil made up of a mixture of particle sizes
Sand: Soil made up of the largest particles

In general, sandy soils drain faster than clay soils, because there is more space between the larger particles. Soil structure also influences the quality of the soil. Lifeless, compacted, sandy soil will not absorb water, while healthy clay soil will be more sponge-like, holding and releasing water. The “best” soil – an even blend of sand, silt and clay – is called loam.

Find your soil structure by testing your soil

Some tests can be done onsite to figure out what kind of soil you have. Others might require lab analysis. Certain other conditions require specialized tests, such as soil used for food production or soil receiving a lot of storm water.

You can test your home landscaping soil yourself using a “Jar Test.” This is a fun project to do with kids or as a family.

Use this graphic as an example to compare your jar to. Aim to get the most even distribution, as shown with the loam jar. Image: Water Authority

Use this graphic as an example with which to compare your jar. Try to get the most even distribution, as shown with the loam jar. Image: San Diego County Water Authority

How to do the “Jar Test”

  • Use a one-quart glass container.
  • Add one cup of soil from the garden. You can select one area or take samples from several areas and blend them together.
  • Add three cups of distilled water.
  • Close the jar and shake it until all the soil solids are suspended in water. Put the jar on a shelf and wait 24 hours.
  • If the container is still cloudy, wait another 24 hours. After 48 hours, the soil layers should be settled on the bottom.
  • Measure the layers in proportion to each other, with the total adding up to 100%. Sand will be on the bottom, silt in the middle, and clay on top.
  • Refer to the graphic to determine your soil type, based on the proportions of sand, silt, and clay. Which jar does your home sample look most like?

Now you can work to improve your soil condition, providing the best possible foundation for your landscaping plants and the most efficient irrigation.

The San Diego County Water Authority and its partners also offer other great resources for landscaping upgrades, including free WaterSmart classes at WaterSmartSD.org.

Trump Administration Unveils New Clean Water Act Rules. California Could See Big Impact

/in , , /by /Desert Sun (Palm Springs, Calif.)by Mark Olalde

The Trump administration on Thursday revealed an overhaul of the Clean Water Act that could remove federal protections for waterways around the country, including as many as two-thirds of those in California.

The arid West, where intermittent rainfall often flows through arroyos and washes, could be especially impacted by the rollback of federal jurisdiction, as the new “Navigable Waters Protection Rule” will remove federal oversight from ephemeral waterways created by rain or snow.

About 66% of California’s waterways are ephemeral or intermittent, according to the government’s own reports that were used in formulating earlier Clean Water Act rules. That number rises to 81%  around the entire Southwest, including 94% of Arizona’s watercourses.

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UC Merced Researchers Working on Innovative Way to Desalinate Ag Water

/in , /by /ABC 30 News/KFSN (Fresno, Calif.)by Sara Sandrik

MERCED, Calif. (KFSN) — A new project at UC Merced is focusing on irrigation water.
The work could have a significant impact on the crops that are grown throughout the Central Valley.

“We’re trying to take two problems and come up with one solution out of the two of them. We have an excess of drainage water which has excess salt in it, and we need cooling of agricultural greenhouses,” says assistant professor James Palko.

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Water Authority Developing 2020 Urban Water Management Plan

/in , /by

January 23, 2020 – The San Diego County Water Authority’s Board of Directors on Thursday authorized work on the 2020 Urban Water Management Plan. The Board approved a contract with the firm Woodard & Curran to provide support services for preparation of the plan, which documents the region’s approach to ensuring a safe and reliable water supply.

For a video of how the Urban Water Management Plan works, go to: https://www.sdcwa.org/urban-water-management-plan-1

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Desalination Emerges as a Possible Solution for Another Monterey County Water Challenge

/in , , /by /Monterey County Weeklyby Asaf Shalev

On par with mission architecture or cattle ranching is another consequential relic of Spanish colonialism in California: the idea that water pumped from underground belongs to whoever owns the land above.

In the Central Valley, a major danger of unregulated pumping has been a drooping of the surface at a rate of one foot a year. Here, in the Salinas Valley, so much freshwater has been extracted that, in some aquifers, the natural flow from continent to ocean has reversed – seawater is pushing through gravel and sand into groundwater sources, threatening to spoil a critical household and agricultural supply.

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IID Approves Controversial Land Deal Near Salton Sea for Construction of ‘Inland Port’

/in , , /by /Palm Springs Desert Sunby Mark Olaide

The Imperial Irrigation District board of directors voted this week to approve an option to sell 2,880 acres near Niland and Calipatria to a Moreno Valley-based developer for the construction of an “inland port.”

The board postponed action on the deal in December and called for more information and new terms, which IID staff presented before Tuesday’s vote. By a 4-1 vote, the board approved the amended deal, with President Norma Sierra Galindo as the lone vote in opposition.

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Trump Admin Fast-Tracks Colorado River Pipeline

/in , , /by /E&E News by Jeremy P. Jacobs

The Trump administration has put one of the largest new water projects on the Colorado River on the fast track, raising concerns among environmentalists.

Utah first proposed building a 140-mile pipeline from Lake Powell on the Utah-Arizona border more than a decade ago. The plan, however, was waylaid by environmental and other reviews during the Obama administration.

But last fall, the Utah Division of Water Resources updated the proposal, removing a hydropower plant and cutting $100 million from its price tag.

The move also changed which federal agency had jurisdiction over it — from the Federal Energy Regulatory Commission to the Bureau of Reclamation.

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Not Sports Podcast: San Diego Water Authority Board Chair Jim Madaffer

/in , /by /KOGO-AM 600 (Not Sports Podcast)by Jack Cronin and Darren Smith Quoted: San Diego County Water Authority

Darren Smith: Joining us now in studio is San Diego County Water Authority Board Chair Jim Madaffer.

Smith: “I think some of us we just turn on the shower in the morning and we use the faucet in our home and we never give a second thought as to what it’s coming and where it’s coming from, yet you have all the answers to these questions, don’t you?”

Jim Madaffer: “People do just turn on the faucet, the garden hose and they expect water to come out but yet a lot of folks don’t realize the incredible journey those molecules took to get to that faucet and what it takes to make sure they’re being delivered safe potable quality water and that it’s always reliable and at the best price possible.”

(“Not Sports” podcast with Darren Smith and Jack Cronin is a nightly look at stories that affect San Diego and the greater Southern California region.)

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Time’s Up on Groundwater Plans: One of the Most Important New California Water Laws in 50 Years Explained

/in , /by /KQED (San Francisco)by Molly Peterson

Much of California’s water supply is a hidden asset: Deep below the surface, rocks, gravel and sand store water like a sponge, in an underground zone called an aquifer.

In dry years, this groundwater has been tapped to save farms, keep grass green and provide drinking water to millions of Californians. But over time, people have taken more water out than nature has put back in.

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