In the Kangra Valley of India's western Himalaya, farmers have for centuries relied on community-managed kuhl systems - intricate networks of collectively built and maintained irrigation channels - for their rice and wheat farming. Over the years, earthquakes and floods have repeatedly destroyed villagers' kuhls. More recently, increasing nonfarm employment has drawn labor away from kuhl maintenance and from farming itself. Prevailing theories of common property resource management suggest that such conditions should cause the kuhls to die out; instead, most have beentransformed and remain...