Fish Facilities Salvage Data from 1993-2021

The Bureau of Reclamation’s (Reclamation) Central Valley Project (CVP) delivers up to over three million acre-feet of water annually for agricultural, municipal, industrial, and environmental needs in California from the Sacramento-San Joaquin River Delta (Delta) through the C.W. “Bill” Jones Pumping Plant (JPP). A Reclamation operated fish salvage facility, the Tracy Fish Collection Facility (TFCF), is located upstream of the JPP and functions to salvage fish entrained in exported water (Bates and Vinsonhaler 1957). Additionally, the John E. Skinner Delta Fish Protective Facility (SDFPF) added by the department of water resources in 1968 to salvage fishes diverted by the State water Project (SWP). Salvage process involves fish collection, counting, handling and transportation back to Delta. To prevent fish loss, a fish facility was constructed at Old river, where fish were diverted to the fish facility for counting and reporting. Currently, after counting, the fish are collected in storage tanks and taken to several release locations in the Delta via fish-haul tank trucks. Around 19,024,323 fishes from 31 species were salvaged through this process from 1993-2021 by the two fish facilities. The top five species salvaged by both the facilities in 2021 were Threadfin Shad (31%), Bluegill (25%), Largemouth Bass (6%), Inland Silverside (6%), and Striped Bass (5%). Fishes listed (ESA or CESA) or fish species salvaged under special study salvaged from 1993-2021 were Chinook Salmon [1,122,436 (76%)], Delta Smelt [201,408 (14%)], steelhead trout [110,720 (7%)], Longfin Smelt [41,173 (3%)], and Green Sturgeon [654 (0.04%)] respectively. More data visualization can be found here (https://tinyurlfordatavisualisation.shinyapps.io/Salvage/). There are 5 comma-separated values (csv) files with all variables required for salvage calculations and each individual file for total salvage by month, year, and species from 1993-2021.

美国垦务局（Bureau of Reclamation）的中央谷项目（Central Valley Project, CVP）年供水量可达300余万英亩英尺，通过C.W. "比尔"·琼斯抽水站（C.W. "Bill" Jones Pumping Plant, JPP）从萨克拉门托-圣华金河三角洲（Sacramento-San Joaquin River Delta，下称三角洲）向加利福尼亚州输送水资源，用于农业、市政、工业及环境用水需求。垦务局运营的特雷西鱼类收集设施（Tracy Fish Collection Facility, TFCF）坐落于JPP上游，是一处鱼类救助设施，用于救助随外调输水被裹挟的鱼类（Bates与Vinsonhaler，1957）。1968年，加利福尼亚州水资源部增设了约翰·E·斯金纳三角洲鱼类保护设施（John E. Skinner Delta Fish Protective Facility, SDFPF），以救助加州水资源项目（State Water Project, SWP）截留的鱼类。鱼类救助流程包括收集、计数、处理，并将鱼类转运回三角洲。为避免鱼类损耗，相关方在老河道（Old River）修建了鱼类收容设施，鱼类会被分流至该设施完成计数与记录。当前，经计数后的鱼类会被收纳于储水箱中，再通过鱼类转运罐车运至三角洲内的多个放流点位。1993年至2021年间，这两座鱼类救助设施累计救助了31个物种的约19024323尾鱼类。2021年两座设施救助量排名前五的物种依次为：斑鰶（Threadfin Shad，占比31%）、蓝鳃太阳鱼（Bluegill，占比25%）、大口黑鲈（Largemouth Bass，占比6%）、内陆银汉鱼（Inland Silverside，占比6%）以及条纹石鮨（Striped Bass，占比5%）。1993年至2021年间，被列入《濒危物种法案》（Endangered Species Act, ESA）或《加州濒危物种法案》（California Endangered Species Act, CESA）的物种，以及经专项研究救助的物种依次为：奇努克鲑（Chinook Salmon，1122436尾，占比76%）、德尔塔胡瓜鱼（Delta Smelt，201408尾，占比14%）、钢头鳟（steelhead trout，110720尾，占比7%）、长鳍胡瓜鱼（Longfin Smelt，41173尾，占比3%）以及绿鲟（Green Sturgeon，654尾，占比0.04%）。更多数据可视化内容可访问：https://tinyurlfordatavisualisation.shinyapps.io/Salvage/。本次数据集包含5个逗号分隔值（comma-separated values, CSV）文件，涵盖鱼类救助计算所需的全部变量，其中每个文件分别对应1993年至2021年间按月、按年及按物种划分的总救助量。