Assertion: reservoir's water level | /r/HasProperty | lowered by up to 3 feet
Facets:
value: to provide for downstream irrigation needs
type: PURPOSE
value: throughout the summer
type: TEMPORAL
Source sentences:
text: Throughout the summer, the water level is lowered by up to 3 feet (0.91 m) to provide for downstream irrigation needs, and is further lowered after September to provide necessary water storage capability to prevent possible downstream flood damage during the Willamette Valley's rainy season.