It’s been a good winter for drought-stricken California. Record-breaking precipitation in January has raised reservoir levels and added to the essential Sierra Nevada snowpack. It will take many years of consistent, above-average rainfall to fully recover from the drought, and that seems unlikely given the variable nature of the state’s climate. California’s water problems are not only the result of historically scant rainfall. Convoluted water policies, patchwork regulations and burdensome water politics perpetuate the problems, causing imbalances in the way water is managed.
New research has revealed that Tanzania’s official statistics on irrigation often don’t include initiatives set up and run by individual farmers. This is either because they’re not aware of it, or because they don’t consider it to have much potential.
Compared to formally engineered projects, this ‘farmer-led’ irrigation is often small-scale and interspersed among non-irrigated fields. This makes it harder to record. It also takes diverse forms. These range from watering via pumps, wells, flooded valley bottoms, or even via stream diversions or small dams.