Monitoring adult spring-run Chinook salmon throughout the adult lifespan on Deer and Mill Creek

The California Department of Fish and Wildlife (CDFW) collects data
on adult salmonids on Deer Creek and Mill Creek. Data is collected
annually via redd surveys on Mill Creek and holding surveys on Deer
Creek; video camera systems on both creeks collect data on upstream
passage 24 hours a day, 7 days a week from February to August. Data
from this monitoring is used to estimate adult escapement (upstream
passage) abundance and timing, spawner abundance, and other
important metrics for adult salmonids in the watershed. These data
will also be used to inform the development of a juvenile production
estimate (JPE) for spring-run Chinook salmon in the Sacramento River
Watershed as required by Condition of Approval 7.5.2 of Incidental
Take Permit No. 2081-2019-006-00 (ITP) issued by CDFW to California
Department of Water Resources (DWR) for the long-term operation of
the State Water Project.

加利福尼亚州鱼类与野生动物部（California Department of Fish and Wildlife, CDFW）负责收集鹿溪（Deer Creek）与米尔溪（Mill Creek）内成年鲑形目鱼类（salmonids）的监测数据。数据采集按年度开展：米尔溪采用产卵床（redd）调查法，鹿溪则采用栖息状况调查法；两条溪流均部署了摄像监测系统，于每年2月至8月间全天候（24小时不间断、每周无休）采集鱼类上游洄游的相关数据。本监测所得数据可用于估算该流域内成年鲑形目鱼类的上游洄游种群丰度与时间节点、产卵种群规模，以及该流域成年鲑形目鱼类的其他关键监测指标。此外，这些数据还将用于协助制定萨克拉门托河流域春季洄游奇努克鲑（spring-run Chinook salmon）的幼鱼产量估算值（juvenile production estimate, JPE），以满足加州鱼类与野生动物部为保障州水利工程长期运营，向加利福尼亚州水资源部（California Department of Water Resources, DWR）签发的第2081-2019-006-00号附带捕捞许可（Incidental Take Permit, ITP）中第7.5.2款批准条件的相关要求。