The taking of the Mosul Dam on the Tigris River from ISIS by Kurdish Peshmerga forces backed by US air power highlights the strategic nature of water in the multi-sided Iraq conflict. Even before ISIS seized the giant dam in early August, the militants were taking advantage of the country's drought, cutting off the flow of water from the dam to Baghdad through territory under their control. "ISIS is starting to use dams as weapon of war," wrote meteorologist Eric Holthaus, Slate's Future Tense blog. "So they've made [it] high on their list to take over those dams and control the water downstream." July saw battles between ISIS militants and government troops over the Haditha Dam and its hydroelectric works on the Euphrates. The fall of the complex to ISIS would have given the rebels control over Baghdad's electricity source. But the most grave danger has not passed: ongoing fighting and air-strikes in the area of the Mosul Dam could lead to the dam being breached, which would flood Mosul and other downstream cities, possibly even affecting Baghdad.

A Yazidi militia group has entered the fight against ISIS, clashing with militants near Sinjar. Khudida Kicho, a member of the Yazidi militia, said in a press conference in Erbil: "In the Kahbel area near Sinjar our fighters were able to attack IS militants and kill 24 of them. In the clashes three of our fighters were killed as well, but we will continue to fight terrorists until the end." (BasNews) Kurdish Peshmerga leaders meanwhile said their forces have seized full control of the Mosul Dam, in coordination with US air-strikes on ISIS positions in the area. (IraqiNews.com) But in Baghdad, the general command of Iraq's armed forces warned against foreign planes breaching the nation's airspace and arming "a certain Iraqi faction"—a clear reference to Western arming of the Peshmerga. "We welcome international support for Iraq in its war against terrorism," read the statement. "But Iraq's territorial sovereignty must be respected." (Rudaw, IraqiNews.com)

A survivor who managed to escape by feigning death described a general massacre at the ISIS-occupied Yazidi village of Kojo 20 kilometers south of Sinjar. The village was surrounded by ISIS fighters 12 days ago, with residents ordered to convert on pain of death. On Aug. 15, the fighters moved in, and rounded up the villagers, separating the men from the women and children. The men were lined up and machine-gunned. Up to 80 are believed to have been killed. (BasNews, AP, Reuters) ISIS forces have reportedly brought Sunni Arabs into the cleansed Yazidi town of Sinjar in response to US air-strikes on nearby Arab villages. Yazidi homes are being given to the Arab families. (BasNews) The Kurdistan Regional Government's Peshmerga forces have joined with PKK-aligned Kurdish militias to form the Sinjar Defense Units, to take back the town. (Rojava Report) The KRG's Peshmerga Ministry issued a statement naming several villages where "IS militants" suffered "heavy losses" under US bombardment. Peshmerga forces backed by US air-strikes have also opened an operation aimed at recovering the ISIS-held Mosul Dam. (BasNews, Rudaw)

Authorities on Aug. 10 imposed restrictions on the water supply to seven municipalities in northwest Mexico's Sonora state, after 40,000 cubic meters (10 million gallons) of toxic leached copper from the Buenavista del Cobre mine turned the Río Bacanuchi orange, killing fish and livestock. Among the towns cut off by order of the National Water Commission (Conagua) is the state capital, Hermosillo, home to nearly 800,000 people. The Bacanuchi is a tributary of the Río Sonora, the state's principal river. Sonora state civil defense director Carlos Arias accused mine owner Grupo México of not reporting the spill in a timely manner.

Nicaragua's Commission for the Development of the Grand Canal on July 7 approved a route for the proposed inter-oceanic canal through the Central American country. The waterway, to be built by Chinese company HKND, is slated to run from the Río Punta Gorda (South Atlantic Autonomous Region) on the Caribbean Coast to Brito (Rivas department) on the Pacific coast—a route more than three times as long as the 48-mile Panama Canal. The Commission said the canal will be operational by 2020, but questions have been raised on how the Hong Kong-based company plans to finance the project, estimated at $50 billion—nearly four times greater than Nicaragua's national economy. The canal is to be privately owned and operated. Ecologists have raised concerns about impacts on Lake Nicaragua (also known as Cocibolca), Central America's largest lake and an important fresh-water source for the country. There are fears the the water used by the canal's locks could seriously deplete the lake. The Río San Juan, which feeds the lake and forms the border with Costa Rica, would be dammed to feed the locks. Costa Rica has formally demanded the right to review environmental impact studies for the project before work begins. The Rama-Kriol indigenous people, whose territories in the Punta Gorda river basin would be impacted, are demanding to be consulted on the project. (La Prensa, Nicaragua, July 17; Tico Times, Costa Rica; July 15; Nicaragua Dispatch, Reuters, El Financiero, Mexico, July 8)

Brazilian federal judge Claudio Henrique de Pina has revoked Toronto-based Belo Sun Mining Corp.'s environmental license for the construction of the $750 million Volta Grande open-pit gold mine near the Xingu river in the northern state of Pará, the federal Public Ministry office in the state announced June 25. Upholding a suspension ordered last November, the judge ruled that Belo Sun had failed to address "negative and irreversible" impacts the mine would have on three indigenous groups in the area, the Paquiçamba, Arara da Volta Grande and Ituna/Itatá. The communities are already under threat from the construction of the Belo Monte dam, which will cut water flows by 80% to 90% when it goes into operation, according to the government's National Indigenous Foundation (FUNAI).

Chile's environment, energy, agriculture, mining, economy and health ministers voted unanimously at a June 10 meeting to terminate plans for the $8 billion HidroAysén hydroelectric project, a complex of five dams that was to be built on the Baker and Pascua rivers in the Aysén region in southern Patagonia. Environmentalists and many area residents had vigorously opposed the project since it was first proposed in August 2007. HidroAysén supporters said the dams were necessary to meet energy requirements for the country, which currently gets about 40% of its power from hydroelectric projects. But Socialist president Michelle Bachelet, who began her second term on Mar. 11, has indicated that her government will push instead for more use of alternative sources and for the importation of liquefied natural gas. The companies behind the project—the Spanish-Italian electric energy consortium Endesa-Enel, which owns 51%, and the Chilean company Colbún S.A.—have 30 days to appeal the ministers' decision.

Dozens of Mexican civilians and police were injured on May 21 in a violent confrontation over water resources in the centuries-old village of San Bartolo Ameyalco, now part of Alvaro Obregón delegación (borough) in the Federal District (DF, Mexico City). Over the past year a group of village residents has fought against a plan that the Alvaro Obregón government announced in April 2013 to run pipes off the natural spring now supplying water to San Bartolo Ameyalco. When workers arrived, with a police escort, in the morning of May 21 to lay down pipes for the project, residents armed with clubs, rocks and Molotov bombs attempted to block the construction. The protesters set up flaming barricades and detained at least two police agents, while the police arrested nine protesters, according to villagers. By the end of the day the village was without electricity and was surrounded by some 2,000 DF police agents, who ensured that the construction could proceed. About 50 police agents and 50 to 70 residents were reportedly injured.