Nearly 90% of the streamflow from the Deschutes River in Bend can be diverted through irrigation canals during the irrigation season (April - October). During the summer months, these diversions cause a dramatic reduction in streamflow. The porous, volcanic soil characteristic of this region causes as much as 50% of the water that is diverted from the river in irrigation canals to seep into the ground before it reaches the farm. As a result, irrigation districts need to divert twice the amount of water as they need to serve their patrons. These seasonal flow disruptions have contributed to a decline in the overall health of the river including degraded fish habitat and poor water quality.