late 20th and early 21st century, diversions took up to 95 percent of Pit River summer flows, resulting in the dewatering of significant stretches between Fall River Mills and Big Bend. PG&E is now required to maintain base flow in the river at all times, which has led to a reduction in hydroelectric power generation but has greatly improved wildlife habitat and fishing on these sections of the Pit. History Native Americans The Pit River is located in historical Achomawi territory, who lived in the area expanding from Big Bend to Goose Lake. Human habitation in this region may date back as far as 12,500 years. The Achomawi (consisting of nine distinct bands) had up to 28 villages in the Pit River area and are considered Palaihnihan speakers, along with the neighboring Atsugewi people who lived along southern tributaries of the Pit such as Burney and Hat Creeks, and the Dixie Valley. Because of the sparse resources of the Pit River's high desert watershed, most natives lived close to the river and subsisted primarily by hunting and fishing. Achomawi moved between hunting camps in summer, consisting of cone-shaped tents covered with tule, and larger wood-frame pit houses in winter. The Pit River is named for the pitfall traps the Achomawi dug to capture game that drank at the river. The name Achomawi derives from a Palaihnihan word meaning "people of the river". Achomawi territory was bordered by that of the Klamath and Modoc to the north, the Shasta to the northwest, the Wintun on the west (in the lower Pit and McCloud River valleys), the Yana on the southwest, Maidu to the south, and Paiute to the east. Most of the local tribes have had social and border disputes since ancient times; the Achomawi and Atsugewi were historically subject to raids by the Klamath and the Modoc who would take prisoners to sell as slaves at The Dalles, Oregon – then a major Native American trading hub on the Columbia River, more than to the north. In the early 1800s, armed with horses and firearms obtained by trading with Europeans, the Paiute launched a full-scale attack on the Achomawi, with one raid killing between 200 and 300 people in a camp near modern Fall River Mills. Following this, the Achomawi and other western tribes formed a temporary confederation against the Paiute. After successfully driving off a Paiute attack the next