Pyramid Lake, located in Nevada and a key feature of the Pyramid Lake Paiute Tribe's ancestral land, has been at the center of environmental and cultural challenges for decades. The lake, part of the Great Basin, relies on the Truckee River for its water supply, but upstream diversions to support agriculture and urban areas have dramatically reduced its water levels. Beginning in the early 20th century, the construction of the Derby Dam redirected much of the Truckee River's flow to nearby Lahontan Reservoir, leading to ecological imbalances. This caused a significant decline in the population of native species like the Lahontan cutthroat trout and cui-ui sucker fish, both critical to the Paiute Tribe's culture and subsistence. Legal battles over water rights have ensued for decades, with the tribe fighting to restore flows to the lake and protect its ecological health. Pyramid Lake's story highlights the broader challenges of balancing water use for agriculture, urban growth, and environmental preservation in the arid American West.