Difference between revisions of "Steelhead Management in the Salinas Watershed"

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An [[Summaries of Environmental Topics on the Central Coast of California|environmental summary]] created by the [[ENVS 560/L Watershed Systems]] class at [[CSUMB]].
 +
 
==Summary==
 
==Summary==
The range and abundance of [[Steelhead]] trout have declined dramatically from historical population estimates of the Salinas Watershed<ref> Williams TH, Lindley ST, Spence BC, Boughton D. 2011. Status review update for Pacific Salmon and Steelhead listed under the Endangered Species Act: Southwest Region. National Marine Fisheries Service, Southwest Fisheries Science Center, Fisheries Ecology Division</ref>. Loss of diverse and distinct habitats is considered a major contributor to declining steelhead populations as this reduces life history pathways and diversity while decreases ability to adapt to change. Modification and loss of habitat areas for spawning and nursing in the Salinas Watershed has been compromised by the implementation of dams, concrete in streams, road crossings, lack of vegetation, and improper management practices.<ref>http://www.us-ltrcd.org/downloads/Watershed_Fisheries_Report.pdf</ref>. Declining steelhead populations have also been linked to pollution, passage barriers, low base flows and increased water temperatures. <ref> http://www.mrwpca.org/dwnloads/agendas_minutes/2011-02-28_board/8%20A%20RWC%20Minutes%20and%20Attachments.pdf </ref>. One study has estimated that runs have been reduced from a historical 32,000‐46,000 returning adults (annual) to less than 500 steelhead adults.<ref> http://swr.nmfs.noaa.gov/recovery/SC_Steelhead/Final_Southern_California_Steelhead_Recovery_Plan_Jan_2012.pdf</ref>
+
The range and abundance of [[Steelhead|steelhead]] trout has declined dramatically from historical population estimates in the [[Salinas River Watershed]]<ref name="Bough"> Williams TH, Lindley ST, Spence BC, Boughton D. 2011. Status review update for Pacific Salmon and Steelhead listed under the Endangered Species Act: Southwest Region. National Marine Fisheries Service, Southwest Fisheries Science Center, Fisheries Ecology Division</ref>. Loss of diverse and distinct habitats is considered a major contributor to declining steelhead populations as less habitat is available for the numerous life cycle phases and life history pathways. Modification and loss of habitat areas for spawning and rearing steelheads in the Salinas watershed has been compromised by the implementation of dams, concrete in streams, road crossings, lack of vegetation, and improper management practices.<ref name="ltrcd"> http://www.us-ltrcd.org/downloads/Watershed_Fisheries_Report.pdf</ref>. Declining steelhead populations have also been linked to pollution, low base flows and increased water temperatures. <ref name="mrwpca"> http://www.mrwpca.org/dwnloads/agendas_minutes/2011-02-28_board/8%20A%20RWC%20Minutes%20and%20Attachments.pdf </ref>. It is estimated that runs have been reduced from a historical 32,000‐46,000 returning adults (annually) to less than 500 steelhead adults.<ref name="RP"> http://swr.nmfs.noaa.gov/recovery/SC_Steelhead/Final_Southern_California_Steelhead_Recovery_Plan_Jan_2012.pdf</ref>
 
+
  
 
==Location==
 
==Location==
The [http://maps.google.com/ Salinas River] consists of more than 75 miles of streams and drains a watershed of about 4,780 square miles in [http://www.co.monterey.ca.us/ Monterey County], California. The river flows northwest from headwaters on the north side of Garcia Mountain to its mouth near the town of Marina <ref> http://www.cemar.org/SSRP/pdfs/SSRP_Monterey.pdf</ref>. A map of the [http://www.cemar.org/SSRP/Evaluation/Figure06_Salinas.pdf Salinas watershed], provided by CEMAR, depicts all of the essential streams in the watershed, streams that are available and suitable for ''O. mykiss'' habitat. <ref>http://www.cemar.org/SSRP/Evaluation/Figure06_Salinas.pdf</ref>
+
The [[Salinas River]] is 172 miles long and drains a watershed area of 4,780 square miles within [http://www.co.monterey.ca.us/ Monterey County], California. The Salinas River Basin consists of the Salinas River, three major tributaries (Arroyo Seco, Nacimiento, and San Antonio Rivers), and eight smaller tributaries <ref name="Escapement">http://www.mcwra.co.monterey.ca.us/Agency_data/Fish_Monitoring/2011%20Salinas%20River%20Basin%20Adult%20Steelhead%20Escapement.pdf</ref> The river flows northwest from headwaters on the north side of Garcia Mountain to its mouth near the town of Marina. <ref name="cemar"> http://www.cemar.org/SSRP/pdfs/SSRP_Monterey.pdf</ref> Dams have been built on the Salinas River mainstem and all major tributaries except for the Arroyo Seco River. This has heavily influenced stream hydrology and the ability of steelhead to access spawning and rearing habitat within the Salinas Basin. <ref name="Escapement"/> The dam on the Salinas River effectively  segregates the upper portion of the river while the [[Nacimiento]] and [[San Antonio]] dams have further reduced and eliminated sizable steelhead runs. These dams are expected to decrease runoff to the ocean substantially in the future with flow anticipated only during wet years with winter runoff volumes insufficient in attracting and permitting steelhead entrance. <ref name="cemar"/> In addition, the health of the Salinas River and its tributaries is diminishing as evident through demonstrated high nitrate concentrations, erosion, diversion and barrier impacts and the lowest recorded water quality in Monterey County. <ref name="mrwpca"/>
  
==Conservation Efforts==
+
==Conservation Status and Efforts==
Center for Ecosystem Management and Restoration, [http://www.cemar.org/steelhead.html CEMAR] has led a steelhead restoration program along the California coast since 2001 through compilation of a digital archive of key information sources, documentation of the historical distribution and current status of salmonid populations, and  evaluation of the potential for watersheds to support restored salmonid populations <ref>Boughton DA. 2007. [NMFS] National Marine Fisheries Service. Biological Opinion, Salinas River Diversion Facility. Oyer, P.H., 1912.</ref>.
+
Conservation initiatives and recovery efforts for steelhead populations requires protection, restoration and maintenance of a wide range of habitats to allow natural diversity of the species to be fully expressed. Inadequate information regarding life history characteristics and abundance are key factors limiting efforts and effective management actions.<ref name="Escapement"/> However, [http://www.nmfs.noaa.gov/ NOAA Fisheries Service] has dominated the recovery effort through mandates and recommendations of [http://www.nmfs.noaa.gov/pr/recovery/ Recovery Plans] and [http://www.nmfs.noaa.gov/pr/consultation/opinions.htm Biological Opinions].  
  
The U.S. Endangered Species Act mandated the National Marine Fisheries Service to develop and implement recovery plans for conservation of the southern California steelhead<ref>National Marine Fisheries Service. 2011. Southern California Steelhead Recovery Plan. Southwest Region, Protected Resources Division, Long Beach,
+
===NOAA Fisheries Service===
California</ref>.
+
NOAA Fisheries Service designated two [http://en.wikipedia.org/wiki/Distinct_population_segment Distinct Population Segment (DPS)] of steelhead in the [[Steelhead Management in the Monterey Bay Region|Monterey Bay Region]] in 1997 and designated Critical Habitat areas in 2005. These steelhead were listed as “Threatened” under the [http://www.natureserve.org/explorer/statusus.htm U.S. Endangered Species Act](ESA) and were described as the Central California Coast steelhead DPS and the South-Central California Coast steelhead DPS. The South-Central DPS includes steelhead populations in the Salinas watershed as the designations extends below natural and manmade impassable barriers in streams from the Pajaro River (inclusive) to, but not including the Santa Maria River, California <ref name="NOAA">http://www.nwr.noaa.gov/ESA-Salmon-Listings/Salmon-Populations/Steelhead/STSCC.cfm</ref> These designations allow NOAA Fisheries Service to regulate impacts to steelhead including habitat modification and require development and implementation of recovery plans for conservation of the species. These recovery plans must establish clear objectives, include specific management measures, and estimate timeframes and costs of actions and recovery <ref name="Index"> http://www.nwr.noaa.gov/Salmon-Recovery-Planning/index.cfm</ref>.
 
+
Other conservation efforts include fish counting. In 2011, [http://fishbio.com/?s=salinas+river FISHBIO] installed an anchoring system for a fish counting weir in the Salinas River.
+
  
 +
===The Center for Biological Diversity===
 +
The
 +
[http://www.biologicaldiversity.org/species/fish/central_California_coast_steelhead_trout/index.html Center for Biological Diversity], fishing groups and other environmental groups have worked to improve protection for steelhead trout after it was listed as a threatened species in 1997. The Center for Biological Diversity filed a lawsuit against NOAA Fisheries Service which resulted in critical habitat protections and regulations and prevented illegal “take” of steelhead. In 2005, the final critical habitat areas were designated and excluded rainbow trout, steelhead trout landlocked above dams and important riparian habitat areas. <ref> George A. 2006. Threatened steelhead. Bay Nature. Ear to the ground. Accessed Apr 3, 2012: http://baynature.org/articles/apr-jun-2006/ear-to-the-ground/threatened-steelhead </ref>.
 +
===The Center for Ecosystem Management and Restoration===
 +
The Center for Ecosystem Management and Restoration [http://www.cemar.org/steelhead.html (CEMAR)]has led a small steelhead restoration program along the California coast since 2001 through compilation of a digital archive of key information sources, documentation of the historical distribution and current status of salmonid populations, and evaluation of the potential for watersheds to support restored salmonid populations <ref>Boughton DA. 2007. [NMFS] National Marine Fisheries Service. Biological Opinion, Salinas River Diversion Facility. Oyer, P.H., 1912.</ref>.
  
 
==Resources at stake==
 
==Resources at stake==
[http://www.biologicaldiversity.org/species/fish/central_California_coast_steelhead_trout/index.html The Center for Biological Diversity], fishing groups  and environmental groups worked to improve protection for the steelhead trout after being listed as a threatened species in 1997. Designation of critical habitat or issue protective regulations was not issued by the National Marine Fisheries Service, so a lawsuit was filed by the Center for Biological Diversity resulting in critical habitat protections and regulations preventing illegal “take” of central coast steelhead. In 2005, the final critical habitat areas were designated and significantly reduced and excluded important riparian habitat. The areas excluded rainbow trout and steelhead trout landlocked above dams.
+
Stakeholders such as fishermen, [http://www.nmfs.noaa.gov/ NOAA Fisheries Service], [http://www.dfg.ca.gov/ CA Dept of Fish and Game], [http://www.calfish.org/ CalFish], [[Monterey County Water Resources Agency]] and the [http://www.waterboards.ca.gov/ State Water Resources Control Board] are working to protect the following resources:<ref name="ltrcd"/>
 +
*Recreational and commercial fishing industries
 +
*Ecosystem balance and diversity
 +
*Health of the Salinas River (provides water and sediments to Monterey Bay)
 +
*Monterey Bay and the National  Marine Sanctuary
  
The viability of evolutionary unit of steelhead is at stake and the need to identify and protect minimum flows is required for their survival<ref>George A. 2006. Threatened steelhead. Bay Nature. Ear to the ground. Accessed Apr 3, 2012: http://baynature.org/articles/apr-jun-2006/ear-to-the-ground/threatened-steelhead</ref>.
+
==Key Dates==  
+
Important dates regarding regulation, management and conservation of the South-Central DPS are listed below: <ref name="NOAA"/>
==Key Dates== <ref name ="ref one">http://www.nwr.noaa.gov/ESA-Salmon-Listings/Salmon-Populations/Steelhead/STSCC.cfm</ref>
+
*Aug 18th, 1997 - Listed as threatened under the ESA
*Aug 18th, 1997 - South-Central DPS Listed as threatened under the U.S. Endangered Species Act (ESA)
+
 
*June 28th 2005 - Final protective regulations issued
 
*June 28th 2005 - Final protective regulations issued
 
*Sep 2nd, 2005 - [http://www.nwr.noaa.gov/Salmon-Habitat/Critical-Habitat/Index.cfm Critical Habitat] designated for the South-Central DPS under the ESA
 
*Sep 2nd, 2005 - [http://www.nwr.noaa.gov/Salmon-Habitat/Critical-Habitat/Index.cfm Critical Habitat] designated for the South-Central DPS under the ESA
 
*Jan  5th, 2006 - Threatened status reaffirmed
 
*Jan  5th, 2006 - Threatened status reaffirmed
*June 21st 2007 – Biological Opinion issued by NMFS requesting steelhead escapement monitoring
+
*June 21st 2007 – A [http://swr.nmfs.noaa.gov/recovery/Final_Biological_Opinion-Salinas_Valley_Water_Project_062107.pdf Biological Opinion] was issued by NOAA Fisheries requesting steelhead escapement monitoring
 
*Dec  7th, 2011 - Five-year review determined South-Central DPS should continue to be listed as threatened
 
*Dec  7th, 2011 - Five-year review determined South-Central DPS should continue to be listed as threatened
  
==Salinas Valley Water Project==
+
==Recent Events==
 
+
===Salinas Valley Water Project - [[Salinas River Diversion Facility|Diversion Facility]]===
===Diversion Facility===
+
The [http://www.mcwra.co.monterey.ca.us/SVWP/SVWP_Project_Description.pdf Salinas Valley Water Project (SVWP)] is a collaborative effort between Salinas Valley stakeholders and the [http://www.mcwra.co.monterey.ca.us/ Monterey County Water Resources Agency]to address water resources management issues in the Salinas Basin while incorporating steelhead recovery strategies.  
The [http://www.mcwra.co.monterey.ca.us/SVWP/SVWP_Project_Description.pdf Salinas Valley Water Project (SVWP)]is a collaborative effort with Salinas Valley and the [http://www.mcwra.co.monterey.ca.us/ Monterey County Water Resources Agency]to address the water resources management issues within the Salinas Valley. The SVWP provides for the long term management and protection of groundwater resources by in the basin by stopping seawater intrusion, provides adequate water supplies and flexibility to meet current and future needs, and provides the surface water supply necessary balanced groundwater basin in the Salinas Valley.
+
The [[Monterey County Water Resources Agency]] installed an inflatable [[Salinas River Diversion Facility|rubber dam]] diversion facility in May 2010 that inflates from April to October, creating a reservoir of water to be treated at the wastewater treatment plant operated by the [http://www.mrwpca.org/ Monterey Regional Water Pollution Control Agency (MRWPCA)]<ref>http://www.mrwpca.org/dwnloads/update/Update_Spring08.pdf</ref>. Features of the diversion facility include a spillway gate operated with the inflatable dam, a screened diversion designed to avoid steelhead fry entrainment, a fishway to facilitate passage during migration, and a low-flow passage to enable passage over the deflated structure<ref>http://www.mcwra.co.monterey.ca.us/SVWP/SVWP_Project_Description.pdf</ref>. Specifically, the MCWRA has developed flow prescriptions based on the condition of the Nacimiento reservoir and stream flow to avoid impacts to steelhead and critical habitat areas <ref name="Escapement"/>. Depending on these conditions, releases of water from Nacimiento reservoir may be made to facilitate upstream or downstream migration of steelhead. The project also includes fish and flow surveillance activities and a steelhead population and habitat monitoring program <ref name="cemar"/>. The Biological Opinion issued by NOAA Fisheries Service also requested that adult steelhead escapement monitoring be conducted. In 2011, [http://fishbio.com/ FISHBIO] implemented this escapement program with the objective of investigating abundance, escapement and characteristics of migration through operation of a fish counting weir in the Salinas River. <ref name="Escapement"/> Integrity of the dam was compromised in June 2011 when excess water landed on the downstream side of the dam and severely eroded crucial areas of the riverbed <ref>Johnson J. 2012. Salinas rubber dam repair costs soar. Monterey County Herald. News. Accessed Apr 3, 2012: http://www.montereyherald.com/portal/water/ci_19991761?_loopback=1</ref>.
 
+
The [http://www.mcwra.co.monterey.ca.us/ Monterey County Water Resources Agency] operates an inflatable rubber dam diversion facility that inflates from April to October, creating a reservoir of water to be treated at the wastewater treatment plant operated by the [http://www.mrwpca.org/ Monterey Regional Water Pollution Control Agency (MRWPCA)]<ref>http://www.mrwpca.org/dwnloads/update/Update_Spring08.pdf</ref>. Features of the diversion facility include a spillway gate operated with an inflatable dam, a screened diversion meeting the [http://www.nmfs.noaa.gov/ National Marine Fisheries Service] criteria for steelhead fry to avoid entrainment, a fishway to facilitate fish passage during migration periods that coincide with steam diversion, and a low-flow passage channel to facilitate passage over the deflated structure <ref>http://www.mcwra.co.monterey.ca.us/SVWP/SVWP_Project_Description.pdf</ref>.
+
 
+
The dam was first activated in May 2010 and resulted in $14 million for the dam as part of the $33 million Salinas Valley Water Project, which included changes to the Lake Nacimiento Dam spillway. The project was designed to divert river water, in combination with recycled water in irrigation of farmland surrounding Castroville, thereby reducing the need for groundwater in an attempt to halt seawater intrusion. In June 2011, water landing on the downstream side of the dam eroded the river bed and began to threaten the integrity of the dam <ref>Johnson J. 2012. Salinas rubber dam repair costs soar. Monterey County Herald. News. Accessed Apr 3, 2012: http://www.montereyherald.com/portal/water/ci_19991761?_loopback=1</ref>.
+
  
 
==References==
 
==References==
Line 41: Line 44:
  
 
==Links==
 
==Links==
 +
* [[Steelhead Management in the Monterey Bay Region]]
 +
* [[Salmonids in California's Central Coast Region: Salmon, Trout, and Steelhead]]
 +
* [[Anadromous Fishes of California's Central Coast Region]]
 +
* [[Anadromous Species of Washington, Oregon, and California]]
 +
* [[MBNMS]]
 +
* [[NMFS]]
 +
* [[MCWRA]]
 +
* [[Monterey One Water]]
 
* [http://www.nwr.noaa.gov/ESA-Salmon-Listings/Salmon-Populations/Steelhead/ NOAA Northwest Regional Office]
 
* [http://www.nwr.noaa.gov/ESA-Salmon-Listings/Salmon-Populations/Steelhead/ NOAA Northwest Regional Office]
* [http://sep.csumb.edu/sep/ CSUMB]
 
* [http://montereybay.noaa.gov/monitoringnetwork/ws_salinas.html Monterey Bay Sanctuary, Salinas Watershed Citizen Monitoring]
 
* [http://www.nmfs.noaa.gov/ National Marine Fisheries Service]
 
 
* [http://www.mcwra.co.monterey.ca.us/SVWP/SVWP_Project_Description.pdf Salinas Valley Water Project]
 
* [http://www.mcwra.co.monterey.ca.us/SVWP/SVWP_Project_Description.pdf Salinas Valley Water Project]
* [http://www.mrwpca.org/ Monterey Regional Water Pollution Control Agency (MRWPCA)]
 
 
* [http://www.us-ltrcd.org/downloads/Watershed_Fisheries_Report.pdf Watershed Fisheries Report 2002]
 
* [http://www.us-ltrcd.org/downloads/Watershed_Fisheries_Report.pdf Watershed Fisheries Report 2002]
 
* [http://swr.nmfs.noaa.gov/recovery/SC_Steelhead/Final_Southern_California_Steelhead_Recovery_Plan_Jan_2012.pdf Southern California Steelhead Recovery Plan, 2012]
 
* [http://swr.nmfs.noaa.gov/recovery/SC_Steelhead/Final_Southern_California_Steelhead_Recovery_Plan_Jan_2012.pdf Southern California Steelhead Recovery Plan, 2012]
* [http://www.mcwra.co.monterey.ca.us/ Monterey County Water Resources Agency]
 
 
* [http://fishbio.com/?s=salinas+river FISHBIO]
 
* [http://fishbio.com/?s=salinas+river FISHBIO]
* [[Steelhead in the Monterey Bay Region|Steelhead in the Monterey Bay Region]]
 
  
 
==Disclaimer==
 
==Disclaimer==
 
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of CSUMB, its staff, or students.
 
This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of CSUMB, its staff, or students.

Latest revision as of 06:36, 14 April 2020

An environmental summary created by the ENVS 560/L Watershed Systems class at CSUMB.

Summary

The range and abundance of steelhead trout has declined dramatically from historical population estimates in the Salinas River Watershed[1]. Loss of diverse and distinct habitats is considered a major contributor to declining steelhead populations as less habitat is available for the numerous life cycle phases and life history pathways. Modification and loss of habitat areas for spawning and rearing steelheads in the Salinas watershed has been compromised by the implementation of dams, concrete in streams, road crossings, lack of vegetation, and improper management practices.[2]. Declining steelhead populations have also been linked to pollution, low base flows and increased water temperatures. [3]. It is estimated that runs have been reduced from a historical 32,000‐46,000 returning adults (annually) to less than 500 steelhead adults.[4]

Location

The Salinas River is 172 miles long and drains a watershed area of 4,780 square miles within Monterey County, California. The Salinas River Basin consists of the Salinas River, three major tributaries (Arroyo Seco, Nacimiento, and San Antonio Rivers), and eight smaller tributaries [5] The river flows northwest from headwaters on the north side of Garcia Mountain to its mouth near the town of Marina. [6] Dams have been built on the Salinas River mainstem and all major tributaries except for the Arroyo Seco River. This has heavily influenced stream hydrology and the ability of steelhead to access spawning and rearing habitat within the Salinas Basin. [5] The dam on the Salinas River effectively segregates the upper portion of the river while the Nacimiento and San Antonio dams have further reduced and eliminated sizable steelhead runs. These dams are expected to decrease runoff to the ocean substantially in the future with flow anticipated only during wet years with winter runoff volumes insufficient in attracting and permitting steelhead entrance. [6] In addition, the health of the Salinas River and its tributaries is diminishing as evident through demonstrated high nitrate concentrations, erosion, diversion and barrier impacts and the lowest recorded water quality in Monterey County. [3]

Conservation Status and Efforts

Conservation initiatives and recovery efforts for steelhead populations requires protection, restoration and maintenance of a wide range of habitats to allow natural diversity of the species to be fully expressed. Inadequate information regarding life history characteristics and abundance are key factors limiting efforts and effective management actions.[5] However, NOAA Fisheries Service has dominated the recovery effort through mandates and recommendations of Recovery Plans and Biological Opinions.

NOAA Fisheries Service

NOAA Fisheries Service designated two Distinct Population Segment (DPS) of steelhead in the Monterey Bay Region in 1997 and designated Critical Habitat areas in 2005. These steelhead were listed as “Threatened” under the U.S. Endangered Species Act(ESA) and were described as the Central California Coast steelhead DPS and the South-Central California Coast steelhead DPS. The South-Central DPS includes steelhead populations in the Salinas watershed as the designations extends below natural and manmade impassable barriers in streams from the Pajaro River (inclusive) to, but not including the Santa Maria River, California [7] These designations allow NOAA Fisheries Service to regulate impacts to steelhead including habitat modification and require development and implementation of recovery plans for conservation of the species. These recovery plans must establish clear objectives, include specific management measures, and estimate timeframes and costs of actions and recovery [8].

The Center for Biological Diversity

The Center for Biological Diversity, fishing groups and other environmental groups have worked to improve protection for steelhead trout after it was listed as a threatened species in 1997. The Center for Biological Diversity filed a lawsuit against NOAA Fisheries Service which resulted in critical habitat protections and regulations and prevented illegal “take” of steelhead. In 2005, the final critical habitat areas were designated and excluded rainbow trout, steelhead trout landlocked above dams and important riparian habitat areas. [9].

The Center for Ecosystem Management and Restoration

The Center for Ecosystem Management and Restoration (CEMAR)has led a small steelhead restoration program along the California coast since 2001 through compilation of a digital archive of key information sources, documentation of the historical distribution and current status of salmonid populations, and evaluation of the potential for watersheds to support restored salmonid populations [10].

Resources at stake

Stakeholders such as fishermen, NOAA Fisheries Service, CA Dept of Fish and Game, CalFish, Monterey County Water Resources Agency and the State Water Resources Control Board are working to protect the following resources:[2]

  • Recreational and commercial fishing industries
  • Ecosystem balance and diversity
  • Health of the Salinas River (provides water and sediments to Monterey Bay)
  • Monterey Bay and the National Marine Sanctuary

Key Dates

Important dates regarding regulation, management and conservation of the South-Central DPS are listed below: [7]

  • Aug 18th, 1997 - Listed as threatened under the ESA
  • June 28th 2005 - Final protective regulations issued
  • Sep 2nd, 2005 - Critical Habitat designated for the South-Central DPS under the ESA
  • Jan 5th, 2006 - Threatened status reaffirmed
  • June 21st 2007 – A Biological Opinion was issued by NOAA Fisheries requesting steelhead escapement monitoring
  • Dec 7th, 2011 - Five-year review determined South-Central DPS should continue to be listed as threatened

Recent Events

Salinas Valley Water Project - Diversion Facility

The Salinas Valley Water Project (SVWP) is a collaborative effort between Salinas Valley stakeholders and the Monterey County Water Resources Agencyto address water resources management issues in the Salinas Basin while incorporating steelhead recovery strategies. The Monterey County Water Resources Agency installed an inflatable rubber dam diversion facility in May 2010 that inflates from April to October, creating a reservoir of water to be treated at the wastewater treatment plant operated by the Monterey Regional Water Pollution Control Agency (MRWPCA)[11]. Features of the diversion facility include a spillway gate operated with the inflatable dam, a screened diversion designed to avoid steelhead fry entrainment, a fishway to facilitate passage during migration, and a low-flow passage to enable passage over the deflated structure[12]. Specifically, the MCWRA has developed flow prescriptions based on the condition of the Nacimiento reservoir and stream flow to avoid impacts to steelhead and critical habitat areas [5]. Depending on these conditions, releases of water from Nacimiento reservoir may be made to facilitate upstream or downstream migration of steelhead. The project also includes fish and flow surveillance activities and a steelhead population and habitat monitoring program [6]. The Biological Opinion issued by NOAA Fisheries Service also requested that adult steelhead escapement monitoring be conducted. In 2011, FISHBIO implemented this escapement program with the objective of investigating abundance, escapement and characteristics of migration through operation of a fish counting weir in the Salinas River. [5] Integrity of the dam was compromised in June 2011 when excess water landed on the downstream side of the dam and severely eroded crucial areas of the riverbed [13].

References

  1. Williams TH, Lindley ST, Spence BC, Boughton D. 2011. Status review update for Pacific Salmon and Steelhead listed under the Endangered Species Act: Southwest Region. National Marine Fisheries Service, Southwest Fisheries Science Center, Fisheries Ecology Division
  2. 2.0 2.1 http://www.us-ltrcd.org/downloads/Watershed_Fisheries_Report.pdf
  3. 3.0 3.1 http://www.mrwpca.org/dwnloads/agendas_minutes/2011-02-28_board/8%20A%20RWC%20Minutes%20and%20Attachments.pdf
  4. http://swr.nmfs.noaa.gov/recovery/SC_Steelhead/Final_Southern_California_Steelhead_Recovery_Plan_Jan_2012.pdf
  5. 5.0 5.1 5.2 5.3 5.4 http://www.mcwra.co.monterey.ca.us/Agency_data/Fish_Monitoring/2011%20Salinas%20River%20Basin%20Adult%20Steelhead%20Escapement.pdf
  6. 6.0 6.1 6.2 http://www.cemar.org/SSRP/pdfs/SSRP_Monterey.pdf
  7. 7.0 7.1 http://www.nwr.noaa.gov/ESA-Salmon-Listings/Salmon-Populations/Steelhead/STSCC.cfm
  8. http://www.nwr.noaa.gov/Salmon-Recovery-Planning/index.cfm
  9. George A. 2006. Threatened steelhead. Bay Nature. Ear to the ground. Accessed Apr 3, 2012: http://baynature.org/articles/apr-jun-2006/ear-to-the-ground/threatened-steelhead
  10. Boughton DA. 2007. [NMFS] National Marine Fisheries Service. Biological Opinion, Salinas River Diversion Facility. Oyer, P.H., 1912.
  11. http://www.mrwpca.org/dwnloads/update/Update_Spring08.pdf
  12. http://www.mcwra.co.monterey.ca.us/SVWP/SVWP_Project_Description.pdf
  13. Johnson J. 2012. Salinas rubber dam repair costs soar. Monterey County Herald. News. Accessed Apr 3, 2012: http://www.montereyherald.com/portal/water/ci_19991761?_loopback=1

Links

Disclaimer

This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of CSUMB, its staff, or students.