The Mexican Water Treaty of 1944 committed the U.S. to deliver 1.5 million acre-feet of water to Mexico on an annual basis, plus an additional 200,000 acre-feet under surplus conditions. The treaty is overseen by the International Boundary and Water Commission.
Colorado River water is delivered to Mexico at Morelos Dam, located 1.1 miles downstream from where the California-Baja California land boundary intersects the river. The river’s natural terminus is the Gulf of California in Mexico, but because of the dams and diversion facilities throughout the Colorado River Basin, natural flow rarely reaches the Gulf. Water diverted at Morelos Dam is primarily used to irrigate Mexicali Valley farmland, and also supplies the cities of Mexicali, Tecate and Tijuana.
Wastewater flowing from Mexico into Arizona fills a stretch of the lower Santa Cruz River through the state’s southern desert—but keeping the water clean and sewer pipe repaired rankles both sides of the border. The 8.5-mile sewer pipeline has caused issues for at least a decade and leaked raw sewage last year, prompting Gov. Doug Ducey ® to briefly declare a state of emergency.
It’s the rainy season now in Mexico. … Despite the rainfall, for five months of the year, many of the metropolitan area’s more than 20 million residents don’t have enough water to drink. Nearly all that rainwater runs off the streets and highways into the city’s massive drainage system built to stave off perennial flooding.
California Atty. Gen. Xavier Becerra filed a lawsuit Tuesday night against the Trump administration, alleging that the federal government violated the Clean Water Act by allowing, in recent years, millions of gallons of raw sewage, heavy metals and other contamination to routinely spill from Tijuana into San Diego.
A top Nevada water and power official has been tapped by the Trump administration to lead the International Boundary and Water Commission for the United States and Mexico. The White House on Friday announced plans to appoint Jayne Harkins, executive director of the Colorado River Commission of Nevada, to head up the U.S. side of the cross-border treaty organization.
The White House plans to nominate Jayne Harkins, head of the Colorado River Commision of Nevada, to represent United States’ international interests related to the Colorado and Rio Grande rivers, both shared with Mexico. In a statement, the White House said it would nominate Harkins as the U.S. Commissioner on the International Boundary and Water Commission.
A lawsuit brought by South Bay cities alleging the federal government is not doing enough to prevent and treat the flow of Tijuana sewage into the U.S. can move forward, a San Diego federal judge ordered this week. The ruling, filed Wednesday, comes a day after U.S. District Judge Jeffrey Miller toured pumps and water-capture basins in the Tijuana River Valley to get a first-hand look at the issue.
Federal court judge Jeffrey T. Miller toured the Tijuana River Valley for several hours on Tuesday to observe pumps and canyon collectors along the border intended to prevent sewage from spilling into San Diego. The unusual move comes as the result of a contentious legal battle in which Miller must decide whether the Trump administration is doing enough to stop sewage that routinely pours into the United States from Mexico.
California farmers are poised to receive hundreds of millions of dollars worth of aid from the U.S. Department of Agriculture to help offset the impact of rising tariffs. But most of the state’s top agricultural exports will not receive direct cash payments, as they and members of the state’s congressional delegation had pushed for.
All along the 1,250 miles of border between Texas and Mexico, hidden under hundreds of feet of soil and rock, lie more than a dozen underground aquifers—areas of permeable earth that hold water—that crisscross the national boundaries. They might be the only sources of water the region will have left when the Rio Grande, hit by a one-two punch of climate change and a booming population, inevitably dries up.
Florida and Mexico are having a food fight over tomatoes and other fresh produce. Will farmers in California and Washington get caught in the crossfire? That’s one question that swirls around the final negotiations between the Trump administration and Mexico on a revamped North American Free Trade Agreement.
To protect one of the most endangered species in the world, an international trade court judge ordered the Trump administration Thursday to ban all seafood harvested with gill nets in Mexico’s northern Gulf of California — a bold move with significant political and economic consequences.
For Americans, what probably matters most in this story are the strawberries. For most Mexicans in the northern Baja peninsula, what matters is the robust economy strawberries bring. For some, what matters most is the steady loss of the fresh groundwater that makes strawberries possible here. The San Quintín valley, an arid region 180 miles south of Tijuana, is the crossroads where strawberries, economics, and groundwater meet.
In the rivers of southern Mexico, a lizard-like fish with armor for skin has taken over the habitat of the native fish like róbalo and mojarra. Locals call it the pez diablo, or devil fish, and long assumed it was poisonous.
Coronado’s mayor flew to Oklahoma this week to talk with the head of the Environmental Protection Agency about possible solutions to the recurring Tijuana sewage spills that sully the San Diego County coastline. Mayor Richard Bailey and Administrator Scott Pruitt spoke one-on-one for about 20 minutes Tuesday during an annual meeting between leading environmental experts and regulators from Mexico, the United States and Canada.
The Trump administration has appointed Republican Mike Stoker for the position [Environmental Protection Agency Region 9 administrator]. … KQED Science recently spoke with him at his office in San Francisco. He said a top priority for him is to deal with sewage pollution at the US-Mexico border.
Nowhere is the domino effect in Western water policy played out more than on the Colorado River, and specifically when it involves the Lower Basin states of California, Nevada and Arizona. We are seeing that play out now as the three states strive to forge a Drought Contingency Plan. Yet that plan can’t be finalized until Arizona finds a unifying voice between its major water players, an effort you can read more about in the latest in-depth article of Western Water.
Even then, there are some issues to resolve just within California.
It’s high-stakes time in Arizona. The state that depends on the Colorado River to help supply its cities and farms — and is first in line to absorb a shortage — is seeking a unified plan for water supply management to join its Lower Basin neighbors, California and Nevada, in a coordinated plan to preserve water levels in Lake Mead before they run too low.
If the lake’s elevation falls below 1,075 feet above sea level, the secretary of the Interior would declare a shortage and Arizona’s deliveries of Colorado River water would be reduced by 320,000 acre-feet. Arizona says that’s enough to serve about 1 million households in one year.
Rescuers searching Tuesday for seven people missing after a dam containing mineral tailings burst at a mine in the northern Mexican border state of Chihuahua found one body that was not yet identified, state officials said.
Mexican President Enrique Pena Nieto has issued a series of decrees establishing water reserves, aiming to preserve sufficient supplies for tens of millions of people.
Last year, after more than 250 gallons of sewage spilled into the Pacific Ocean from the Tijuana River, water pollution in Imperial Beach became an international story. … Although the spills have come to the forefront in the last few years, water pollution has been part of Imperial Beach life for generations, particularly for the surf community.
The state Attorney General has joined San Diego’s regional water regulators in pressuring the White House to do more to address sewage from Tijuana that routinely spills over the border fouling beaches as far north as Coronado. The San Diego Regional Water Quality Control Board, with the backing of Attorney General Xavier Becerra’s office, on Monday filed a 60-day notice of intent to sue the federal government for violations of the Clean Water Act.
The top United States official at the international agency charged with overseeing efforts to stem ongoing water pollution in the Tijuana River Valley stepped down on Friday. The departure of Edward Drusina, former commissioner of the U.S. section of the International Boundary and Water Commission, or IBWC, comes as the agency continues to face legal attacks from South Bay cities that routinely shutter beaches due to pollution from south of the border.
A swarm of small earthquakes hit a town near the U.S.-Mexico border Saturday and continued into Sunday. Dozens of quakes were reported in and around Ocotillo Wells in Imperial County, six of them larger than a magnitude 3, according to the U.S. Geological Survey.
The river is so foul that rumors swirl about two-headed turtles and three-eyed fish. If you fall in, locals joke, you might sprout a third arm. So go the stories about the New River, whose putrid green water runs like a primordial stew from Mexico’s sprawling city of Mexicali through California’s Imperial Valley.
[Rep. Susan] Davis, a San Diego Democrat on the House Armed Services Committee, has grown concerned about untreated sewage leaking from Tijuana’s aging and overworked wastewater collection and treatment system, a problem exacerbated by surges of fecal contamination when Mexican pipes break, pumps fail and rain falls.
Sin City has never been a place that thinks small. So it should come as no surprise that Las Vegas – about 300 miles from the Pacific Ocean – is pondering seawater desalination to meet its long-term water demand. That doesn’t mean Vegas plans to build a pipeline to the ocean. More likely, it would help pay for a desalination facility in a place like Mexico, then trade that investment for a piece of Mexico’s water rights in the Colorado River.
A plan to pipe treated wastewater from Tijuana to the Guadalupe Valley is being championed by authorities who say the project not only would support the state’s wine-growing region, but also solve another problem: reducing the flow to the overburdened San Antonio de los Buenos coastal sewage treatment plant.
Mexico is pledging to spend $4.3 million to clean the Tijuana river channel after two California cities sued a U.S. agency over the decades-old problem of sewage fouling U.S. wetlands and beaches.
It’s a blustery day in the border town of Mexicali in Baja California, Mexico, and five men are huddled inside a makeshift encampment covered with protest signs outside the city’s government offices.
Members of the San Diego Regional Water Quality Control Board gathered in a closed session on Monday afternoon, debating whether to file a lawsuit against the federal government to stem the cross-border flow of sewage, sediment and other contaminants from Tijuana to San Diego.
Beaches as far north as the Hotel del Coronado have been closed following weekend showers that flushed sewage-polluted water through the Tijuana River and into the Pacific Ocean.
The problem with focusing on Trump’s pipe dream of a wall is that real border problems that can actually be solved are being ignored. The Tijuana River, for instance, which crosses the international border before reaching the ocean on the U.S. side, is said to be one of the most polluted waterways in the world.
Not if, but when. That’s the future of water desalination plants in Arizona, according to the head of the state’s water department. They are controversial and expensive, but Arizona’s current leadership views desalinated water – or “desal” – as key to the state’s long-term water plans. Arizona sits atop an estimated 600 million acre-feet of brackish water.
As executive director of the environmental group Wildcoast, [Imperial Beach Mayor Serge] Dedina has led a years-long fight by his city to sue the federal government for failure to protect citizens on both sides of the border from what he calls a “tsunami” of raw sewage, toxic sludge and solid waste that spills through the border region via the Tijuana River Valley, threatening the health of millions.
With health complaints continuing from Border Patrol agents who work the polluted areas of the Tijuana River Valley, the federal Customs and Border Protection agency is quietly trying to solve some of the problems of toxic sewage flows from Mexico — on its own.
In the wake of rising outcry in San Diego of cross-border flows of contaminated water, trash and sediment from Tijuana, Mexico is moving ahead with a series of short-term upgrades to Tijuana’s sewage collection and treatment system aimed at preventing such incidents, and responding with greater speed should they occur.
The cities of Imperial Beach and Chula Vista and the Port of San Diego said the International Boundary and Water Commission’s U.S. section has failed to meet obligations under the federal Clean Water Act to treat the runoff from Tijuana, allowing toxins and bacteria to spread in the Tijuana River Valley and out to the Pacific Ocean.
South Bay elected officials said they are filing a lawsuit Friday in the most dramatic attempt in decades to force the federal government to plug up the millions of gallons of sewage and polluted water that routinely stream over the border from Tijuana into the San Diego region.
Monarch butterflies migrate from the U.S. and Canada to Mexican pine and fir forests that thrive at about the same altitude as prime avocado-growing land. Previously, deforestation linked to lucrative avocado planting had been seen in areas to the west and south of the reserve.
Mexico City got a substantial warning before the shaking from a distant earthquake arrived Friday — some 30 to 60 seconds broadcast over loudspeakers from an earthquake early warning system. It was another success for Mexico City’s earthquake warning system — one which California, Oregon and Washington state still lack, and one that is an ongoing target for elimination by President Trump.
Lake Powell, which straddles Utah and Arizona, is expected to get 47 percent of its average inflow because of scant snow in the mountains that feed the Colorado River, said Greg Smith, a hydrologist with the Colorado Basin River Forecast Center, part of the National Oceanic and Atmospheric Administration.
Constellation Brands, maker of Modelo and Corona beers, finds itself in the crossfire of a bitter dispute. On one side are government officials who are vowing to see the project through; on the other, opponents determined to shut it down, saying the plant will use a large amount of water that should go to local farmers.
Sen. Dianne Feinstein (D-Calif.) called on the Trump administration Wednesday to help plug Tijuana’s rampant spills of sewage and other polluted water, which routinely foul beaches in San Diego and cause border patrol agents to fall ill.
Drought and climate change are having a noticeable impact on the Colorado River Basin, and that is posing potential challenges to those in the Southwestern United States and Mexico who rely on the river. In the just-released Winter 2017-18 edition of River Report, writer Gary Pitzer examines what scientists project will be the impact of climate change on the Colorado River Basin, and how water managers are preparing for a future of increasing scarcity.
States, federal and Mexican officials hailed a binational agreement this fall that they said could lead to a radical shift in how the region prepares for and responds to drought. But three months later, they appear no closer to a drought contingency plan, as negotiations have pitted states and water districts against one another, as the U.S. tries to hammer out details of the plan.
States, federal and Mexican officials hailed a binational agreement this fall that they said could lead to a radical shift in how the region prepares for and responds to drought. But three months later, they appear no closer to a drought contingency plan, as negotiations have pitted states and water districts against one another, as the U.S. tries to hammer out details of the plan.
The Colorado River and its tributaries provide water for about 40 million people and farmlands from Wyoming to Mexico. … In the Mexicali Valley, farmers say they’re concerned that as the pressures on the river grow – and as the [United States-based Constellation Brands'] brewery drinks up more of that precious supply – they’re likely to get less water.
With Tijuana and other rapidly growing coastal cities heavily dependent on the Colorado River, Baja California urgently needs to find new water sources. Baja California Gov. Francisco Vega de Lamadrid’s administration has offered a solution: Build the largest desalination plant in the Western Hemisphere, enough to ensure a supply for decades to come.
San Diego County authorities have lifted a closure of the Imperial Beach shoreline that was impacted by sewage-contaminated flows from the Tijuana River entering the United States.
Precipitation carrying tainted water through the Tijuana River into the Pacific Ocean triggered beach closures Tuesday evening from the international border to Seacoast Drive in Imperial Beach. … The pollution from stormwater runoff adds to spills from aging pipes and potentially hazardous discharges from the deteriorating San Antonio de Los Buenos sewage treatment plant in Punta Bandera, located about six miles south of the border.
The U.S. Section of the International Boundary and Water Commission announced Thursday that it wants to hold a workshop with San Diego-area cities and agencies in hopes of staving off a lawsuit over the flow of sewage from Mexico.
Officials in Imperial Beach said Wednesday that sewage flowing up the coast from Tijuana fouled miles of shoreline over the weekend, severely sickening surfers and other beach goers. Mayor Serge Dedina, who also fell ill, said he received no advanced notice from officials in Mexico about the pollution.
The San Diego County Board of Supervisors voted Tuesday to join the growing legal campaign to force the federal government to do more to stop sewage from spilling over the border from Tijuana that routinely fouls South Bay beaches. “Enough is enough,” Supervisor Greg Cox, whose district includes border region with Mexico, said in a statement.
The effort to prevent sewage from flowing from Tijuana into San Diego County got a small boost Monday when Gov. Jerry Brown signed legislation to provide about $2.1 million in funds for the effort.
A newly signed pact between Mexico and the United States is believed to be the first time that two nations have agreed to allocate part of a shared water resource to the environment. Farmers and cities in both countries will reap benefits from Minute 323, an update to an existing agreement that seeks to sustainably manage the water of the overburdened Colorado River basin.
In March 2014, the staged release of water into the Colorado River Delta was an international spectacle. … Now, a second round of releases is headed to the delta that won’t be nearly as dramatic. But these flows will restore more riverfront with cottonwoods and willows than the last time and their impacts will likely last longer.
Imperial Beach, Chula Vista and the Port of San Diego took the first step toward suing the federal government to stop wastewater and raw sewage from continually pouring over the border from Tijuana into San Diego County. … On Thursday, Lt. Gov. Gavin Newsom, as the chair of the State Lands Commission, announced his support for the efforts by local officials in San Diego to address the situation.
The United States and Mexico expanded a long-term agreement Wednesday that will allow both nations to continue using the Colorado River while also pushing more conservation efforts to ensure that water is available during droughts.
The United States and Mexico unveiled an agreement Wednesday to preserve the overtaxed Colorado River, including spending millions of dollars on conservation and environmental projects and drawing up plans to deal with any shortages amid drought and climate change.
The United States and Mexico have agreed to renew and expand a far-reaching conservation agreement that governs how they manage the overused Colorado River, which supplies water to millions of people and to farms in both nations, U.S. water district officials said.
An agreement amending the longstanding treaty between the U.S. and Mexico on management of the Colorado River will continue the practice of water shortage sharing, but also fund new conservation and environmental programs, and aim to reduce the risk of ruinous drought.
“The network”, as I [John Fleck] call the Colorado River governance structure in my book, is gathering this week in Santa Fe, New Mexico, to among other things celebrate the signing of a new agreement extending the agreement between the United States and Mexico over water sharing and allocation on the Colorado River.
California’s lawsuit claims the federal government violated the U.S. Constitution’s separation-of-powers doctrine “by vesting in the Executive Branch the power to waive state and local laws.” The lawsuit also says the Department of Homeland Security decided to build the walls without complying with the Clean Water Act, the National Environmental Policy Act and the Coastal Zone Management Act.
The U.S. and Mexican governments are close to signing a landmark Colorado River deal that will establish rules for sharing water over the next decade and lay out cooperative efforts intended to head off severe shortages. … The new accord – titled Minute No. 323 to the 1944 Mexican Water Treaty – outlines a series of measures that build on the countries’ current 5-year agreement, which expires at the end of this year.
Federal water-quality officials on Thursday released a list of actions taken in recent years to stop wastewater from flowing from Mexico into the San Diego region, a little more than a week after the city of Imperial Beach threatened a lawsuit.
With Baja California pushing forward on its plan for a massive desalination plant in Rosarito Beach, a ground-breaking proposal to pipe some of that water to the United States has overcome a key hurdle. The U.S. State Department’s approval of a presidential permit marks a step forward for the Otay Water District and its vision for a cross-border pipeline to import the desalinated water from Mexico.
A much-anticipated report on a sewage spill in Tijuana that has sparked tensions with San Diego County gave mixed findings Monday. … The investigation was launched by the International Boundary and Water Commission, which oversees water treaties between Mexico and the United States, among other things.
The Colorado River Delta once spanned nearly 2 million acres and stretched from the northern tip of the Gulf of California in Mexico to Southern California’s Salton Sea. Today it’s one-tenth that size, yet still an important estuary, wildlife habitat and farming region even though Colorado River flows rarely reach the sea.
Baja California’s governor is preparing to declare a state of emergency in the coming days, hoping to draw financial aid for Tijuana’s strained and underfunded sewage system following a massive spill that sent millions of gallons of untreated wastewater from Tijuana across the border and into San Diego last month.
Standing next to the [Tijuana] river valley for a news conference Monday, Rep. Scott Peters said the U.S. Environmental Protection Agency now suspects that discharges may have totaled 230 million gallons, up from an initial figure of 143 million gallons.
Federal officials in the United States and Mexico announced on Thursday a joint investigation into a sewage spill in the Tijuana River that has polluted South County beaches as far north as Coronado — and which now looks to have been intentional as some elected leaders in San Diego suspected.
About 143 million gallons of sewage spilled into the Tijuana River during a period of more than two weeks, said a report released Friday. No other sewage spill in the greater San Diego-Tijuana region has approached this magnitude in years, according to the environmental group Wildcoast.
This issue of Western Water examines the ongoing effort between the United States and Mexico to develop a new agreement to the 1944 Treaty that will continue the binational cooperation on constructing Colorado River infrastructure, storing water in Lake Mead and providing instream flows for the Colorado River Delta.
As vital as the Colorado River is to the United States and Mexico, so is the ongoing process by which the two countries develop unique agreements to better manage the river and balance future competing needs.
The prospect is challenging. The river is over allocated as urban areas and farmers seek to stretch every drop of their respective supplies. Since a historic treaty between the two countries was signed in 1944, the United States and Mexico have periodically added a series of arrangements to the treaty called minutes that aim to strengthen the binational ties while addressing important water supply, water quality and environmental concerns.
As plans move forward for a massive desalination plan in Rosarito Beach, a proposed pipeline to carry some of that water to San Diego County is undergoing scrutiny by the U.S. State Department.
As birds sing and lizards scuttle in the lush vegetation of the Tijuana River Valley, helicopters circle overhead, and Border Patrol agents on all-terrain vehicles comb the area looking to stop illegal border-crossers.
The United States and Mexico are preparing to sign an agreement to address issues of sediment, trash and polluted stormwater that for years have plagued the Tijuana River watershed.
California’s little-known New River has been called one of North America’s most polluted. A closer look reveals the New River is full of ironic twists: its pollution has long defied cleanup, yet even in its degraded condition, the river is important to the border economies of Mexicali and the Imperial Valley and a lifeline that helps sustain the fragile Salton Sea ecosystem. Now, after decades of inertia on its pollution problems, the New River has emerged as an important test of binational cooperation on border water issues. These issues were profiled in the 2004 PBS documentary Two Sides of a River.
Redesigned in 2017, this beautiful map depicts the seven Western states that share the Colorado River with Mexico. The Colorado River supplies water to nearly 40 million people in Arizona, California, Colorado, Nevada, New Mexico, Utah, Wyoming and the country of Mexico. Text on this beautiful, 24×36-inch map, which is suitable for framing, explains the river’s apportionment, history and the need to adapt its management for urban growth and expected climate change impacts.
The Colorado River provides water to more than 35 million people and 4 million acres of farmland in a region encompassing some 246,000 square miles in the southwestern United States. The 32-page Layperson’s Guide to the Colorado River covers the history of the river’s development; negotiations over division of its water; the items that comprise the Law of the River; and a chronology of significant Colorado River events.
As part of the historic Colorado River Delta, the Salton Sea regularly filled and dried for thousands of years due to its elevation of 232 feet below sea level.
The most recent version of the Salton Sea was formed in 1905 when the Colorado River broke through a series of dikes and flooded the seabed for two years, creating California’s largest inland body of water. The Salton Sea, which is saltier than the Pacific Ocean, includes 130 miles of shoreline and is larger than Lake Tahoe.
The Mexican Water Treaty of 1944 committed the U.S. to deliver 1.5 million acre-feet of water to Mexico on an annual basis, plus an additional 200,000 acre-feet under surplus conditions. The treaty is overseen by the International Boundary and Water Commission.
Colorado River water is delivered to Mexico at Morelos Dam, located 1.1 miles downstream from where the California-Baja California land boundary intersects the river between the town of Los Algodones in northwestern Mexico and Yuma County, Ariz.
The Mexican Delta is located at the natural terminus of the Colorado River at the Gulf of Mexico, just south of the U.S.-Mexico border. The desert ecosystem was formed by silt flushed downstream from the Colorado and fresh and brackish water mixing at the Gulf.
The Mexican Delta once covered 9,650 square miles but has shrunk to less than 1 percent of its original size due to man-made water diversions.
This printed issue of Western Water examines how the various stakeholders have begun working together to meet the planning challenges for the Colorado River Basin, including agreements with Mexico, increased use of conservation and water marketing, and the goal of accomplishing binational environmental restoration and water-sharing programs.
This printed issue of Western Water examines the Colorado River Basin Water Supply and Demand Study and what its finding might mean for the future of the lifeblood of the Southwest.
This printed issue of Western Water explores some of the major challenges facing Colorado River stakeholders: preparing for climate change, forging U.S.-Mexico water supply solutions and dealing with continued growth in the basins states. Much of the content for this issue of Western Water came from the in-depth panel discussions at the September 2009 Colorado River Symposium.
This printed copy of Western Water examines the Colorado River Delta, its ecological significance and the lengths to which international, state and local efforts are targeted and achieving environmental restoration while recognizing the needs of the entire river’s many users.
