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  • 1
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    Final Evaluation Memorandum: Strategies for Resolving Low Dissolved Oxygen and Methylmercury Events in Northern Suisun Marsh (2021)
    State Water Resources Control Board | Sacramento, CA
    In:  stuart@swampthing.org | http://aquaticcommons.org/id/eprint/6470 | 393 | 2020-08-24 04:45:31 | 6470 | Bachand & Associates
    Details
    Publication Date: 2021-07-14
    Description: The purpose of the project is to improve our understanding about best management practices that can be utilized on diked managed wetlands in Suisun Marsh for reducing the occurrence of low dissolved oxygen (DO) and high methylmercury (MeHg) events associated primarily with fall flood-up practices. Low DO events are of concern because they can lead to undue stress and even mortality of sensitive aquatic organisms. Elevated MeHg levels are of concern because MeHg is a neurotoxin that bio-magnifies up the food chain and can cause deleterious effects to higher trophic level consumers such as piscivorous fish, birds, and mammals (including humans). This study involved two years (2007-2008) of intensive field data collection at two managed wetland sites in northwest Suisun Marsh and their surrounding tidal sloughs, an area with prior documented low DO events. In addition, the study collected limited soils and water quality field data and mapped vegetation for three managed wetland sites in the central interior of Suisun Marsh, for the purpose of examining whether wetlands at other locations exhibit characteristics that could indicate potential for similar concerns. In Year 1 of the study, the objective was to identify the baseline conditions in the managed wetlands and determine which physical management conditions could be modified for Year 2 to reduce low DO and MeHg production issues most effectively. The objective of Year 2 was to evaluate the effectiveness of these modified management actions at reducing production of low DO and elevated MeHg conditions within the managed wetlands and to continue improving understanding of the underlying biogeochemical processes at play. This Final Evaluation Memorandum examined a total of 19 BMPs, 14 involving modified water management operations and the remaining five involving modified soil and vegetation management practices. Some of these BMPs were previously employed and others have not yet been tested. For each BMP this report assesses its efficacy in improving water quality conditions and potential conflicts with wetland management. It makes recommendations for further study (either feasibility assessments or field testing) and whether to consider for future use. Certain previously used BMPs were found to be important contributors to poor water quality conditions and their continued use is not recommended. Some BMPs that could improve water quality conditions appear difficult to implement in regards to compatibility with wetland management; these BMPs require further elaboration and feasibility assessment to determine whether they should be field tested. In practice for any given wetland, there is likely a combination of BMPs that would together have the greatest potential to address the low DO and high MeHg water quality concerns. Consequently, this report makes no sweeping recommendations applicable to large groups of wetlands but instead promotes a careful consideration of factors at each wetland or small groups of wetlands and from that assessment to apply the most effective suite of BMPs.This report also identifies a number of recommended future actions and studies. These recommendations are geared toward improving the process understanding of factors that promote low DO and high MeHg conditions, the extent of these problems in Suisun Marsh, the regulatory basis for the DO standards for a large estuarine marsh, the economics of BMPs, and alternative approaches to BMPs on diked managed wetlands that may address the water quality issues. The most important of these recommendations is that future BMP implementation should be carried out within the context of rigorous scientific evaluation so as to gain the maximum improvement in how to manage these water quality issues in the diked managed wetlands of Suisun Marsh.
    Description: State Water Resources Control Board
    Description: Project Number 06-283-552-0
    Keywords: Agriculture ; Chemistry ; Engineering ; Environment ; Fisheries ; Management ; Pollution ; BMPs ; dissolved oxygen ; mercury ; Suisun Marsh ; managed wetlands ; best management practices ; methyl mercury ; hydrology ; tidal water quality ; Wetlands and Water Resources ; Bachand and Associates ; Suisun Resource Conservation District ; California Department of Fish and Game ; California Department of Water Resources ; University of California Davis ; U.S. Geological Survey
    Repository Name: AquaDocs
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  • 2
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    BMP treatment technologies, monitoring needs, and knowledge gaps: status of the knowledge and relevance within the Tahoe Basin (2021)
    California State University Sacramento, Office of Water Programs | Sacramento, CA
    In:  http://aquaticcommons.org/id/eprint/2071 | 393 | 2020-08-24 04:48:12 | 2071 | Bachand & Associates
    Details
    Publication Date: 2021-07-11
    Description: This Technical memorandum fulfills Task 2 for Agreement 03-495 between El Dorado County and the Office of Water Programs at California State University Sacramento and their co-authors, Bachand & Associates and the University of California Tahoe Research Group:1) a review of current stormwater treatment Best Management Practices (BMP) in the Tahoe Basin and their potential effectiveness in removing fine particles and reducing nutrient concentrations; 2) an assessment of the potential for improving the performance of different types of existing BMPs through retrofitting or better maintenance practices; 3) a review of additional promising treatment technologies not currently in use in the Tahoe Basin; and4) a list of recommendations to help address the knowledge gaps in BMP design and performance. ... (PDF contains 67 pages)
    Description: California State University Sacramento, Office of Water Programs
    Keywords: Management ; Environment
    Repository Name: AquaDocs
    Type: monograph
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  • 3
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    The natural resources of Bolinas Lagoon: their status and future (2021)
    California Department of Fish and Game | Sacramento, CA
    In:  http://aquaticcommons.org/id/eprint/556 | 8 | 2020-08-24 03:52:46 | 556 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: This publication is an integral part of the Department's high-priority inventory and assessment of coastal marshland and tideflat resources. It is intended as a guide for citizens, planners, administrators, and all others interested in the use and development of coastal lands and waters.Although the resources and problems of Bolinas Lagoon have probably been the subject of more biological and physical investigations than any small estuarine area of the California coast, many of the pertinent reports and information are not readily available to the public.Consequently, it is one purpose of this report to summarize the lagoon's history, ecological attractions, educational values and the problems facing its continued existence. At the same time, it should provide concerned citizens with a knowledge of the sources of additional and more specific information.Publication of this report is consistent with the obligation of the Department of Fish and Game to do everything in its power to protect and maintain the State's fish and wildlife resources. Therefore, its purpose transcends local issues on pollution and development, and the Department is, in fact, submitting a report to the people on the status and future of part of its inheritance and the dowry of coming generations.The report is the third of a scheduled series. It follows similar releases on Upper Newport Bay (Orange County) and Goleta Slough (Santa Barbara county) in March and June of 1970. Documentation of the resources of other critical areas is in progress. There will be future reports of this nature on Elkhorn Slough, Morro Bay, Tomales Bay, Humboldt Bay, and highly threatened marshlands in southern California. (137 pp.)
    Keywords: Conservation ; Pollution ; Biology ; Environment ; Bolinas Lagoon ; California ; natural resources ; conservation ; pollution
    Repository Name: AquaDocs
    Type: monograph
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  • 4
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    The natural resources of San Diego Bay; Their status and future (2021)
    California Department of Fish and Game | Sacramento, CA
    In:  http://aquaticcommons.org/id/eprint/545 | 8 | 2020-08-24 03:49:18 | 545 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: The study of the natural resources of San Diego Bay is a part of a high priority inventory and assessment program conducted by the Department of Fish and Game. This report is a guide for citizens, planners, administrators, and all others interested in the use and development of coastal lands and waters. It documents the status and future of natural resources that should be a part of the inheritance of future generations. References appended provide the interested and concerned reader with sources of more specific information.One of a scheduled series, this publication follows similar documents on Upper New-port Bay (Orange County), Goleta Slough (Santa Barbara County), Bolinas Lagoon (Marin County), and Elkhorn Slough (Monterey County). Preparation of this report has been supported by Fish and Wild-Life Preservation funds and by Pittman-Robertson Federal Aid to wildlife programs. (124 pp.)
    Keywords: Pollution ; Biology ; Environment ; San Diego Bay ; natural resources ; pollution
    Repository Name: AquaDocs
    Type: monograph
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  • 5
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    The natural resources of Morro Bay (2021)
    Californina Department of Fish and Game | Sacramento, CA
    In:  http://aquaticcommons.org/id/eprint/549 | 8 | 2020-08-24 03:50:26 | 549 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: The primary purpose of this report, then, is to document the natural resources of Morro Bay and their values; point out significant problems regarding their use and to make recommendations for preservation of these resources to planners, administrators and interested citizens. A secondary purpose of this report is to pull together into one source, all data and references on the biological resources of Morro Bay. Up to now these data have been widely distributed amongst letters, reports, papers, etc., to which few have access.At the request of Senate Resolution No. 176, 1966 First Extraordinary Session, the Department completed in December, 1966 a report entitled, "Report of the Natural Resources of Morro Bay and Proposal for Comprehensive Area Plan." Based largely upon the recommendations of that report, theSan Luis Obispo County Board of Supervisors appointed a task force to prepare a comprehensive area plan for the Morro Bay area and its watershed. Hence, the information herein is presented in order that the natural resources of Morro Bay will be given adequate consideration, based on the best dataavailable, in the proposed comprehensive area plan and in other plans such as one being prepared by the Coastal Zone Conservation Commission. (148ppp.)
    Keywords: Conservation ; Pollution ; Biology ; Environment ; Morro Bay ; natural resources ; California ; pollution ; conservation
    Repository Name: AquaDocs
    Type: monograph
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  • 6
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    The natural resources of Humboldt Bay (2021)
    California Department of Fish and Game | Sacramento, CA
    In:  http://aquaticcommons.org/id/eprint/557 | 8 | 2020-08-24 03:53:13 | 557 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: In spite of its past abuses by man, Humboldt Bay is one of the few coastal estuaries remaining in California that has not been rendered largely unsuitable for wildlife by commercial development, dredging, filling or pollution. Its importance is emphasized considering that about 65 percent of the State's original estuarine tidelands have already been destroyed. The people have demonstrated their concern for our dwindling natural resources. If we are to preserve what remains it will be necessary for the people to exercise the wisest possible use of these resources.Because of the importance of coastal wetlands to the fish and wildlife of California, the Department of Fish and Game has initiated a high priority statewide inventory of these wetlands. This publication is an integral part of that program. It is intended as a guide for citizens, planners,administrators and all others interested in the use and development of coastal lands and waters.The Department has been charged with the responsibility of protecting and maintaining the fish and wildlife resources of the State. This publication is directed towards meeting this responsibility by outlining the specific resources and recreational aspects of Humboldt Bay, elucidating problems,and recommending courses of action for future development.Preservation of the Humboldt Bay resources is much more than a local issue. What is done or not done here can have statewide, national and international implications. It also must be recognized that there is an obligation to future generations. Decisions made today will affect all thosewho follow in our footsteps. (200pp.)
    Keywords: Conservation ; Pollution ; Biology ; Environment ; natural resources ; Humboldt Bay ; California ; wetlands
    Repository Name: AquaDocs
    Type: monograph
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  • 7
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    The natural resources of Mugu Lagoon (2021)
    California Department of Fish and Game | Sacramento, CA
    In:  http://aquaticcommons.org/id/eprint/555 | 8 | 2020-08-24 03:52:18 | 555 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: The purpose of this report is (1) to document the natural resources of Mugu Lagoon, (2) describe the uses that those resources receive, (3) enumerate the problems that affect them, and (4) recommend measures that will maintain and enhance this wetland area now and in the future. It is intended as a guide to those responsible for resource maintenance of the Lagoon, including the Navy, the U. S. Fish and Wildlife Service and the Department of Fish and Game, as well as to provide information to those interested in the status and future of the Lagoon.This report has been prepared under contract to and fully funded by the Office of Biological Services of the U. S. Fish and Wildlife Service. The goals and purpose of this federal office are to review the impact on fish and wildliferesources of land, mineral and water development practices; construction of inshore pipeline canals and refineries; power plant construction/operation and urban development. This report, and five other southern California reports,covering Agua Hedionda (San Diego County), Anaheim Bay-Huntington Harbour (Orange County), the northern Santa Barbara County coastal wetlands, Carpinteria Marsh (Santa Barbara County) and the Nipomo Dunes and Wetlands (San Luis Obispo County), are part of the Department's "CoastalWetland Series." Other reports of the series are listed inside of the front cover. (190 pp.)
    Keywords: Conservation ; Pollution ; Biology ; Environment ; Mugu Lagoon ; California ; conservation ; pollution ; wetlands ; natural resources
    Repository Name: AquaDocs
    Type: monograph
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  • 8
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    The natural resources of the Napa Marsh (2021)
    California Department of Fish and Game | Sacramento, CA
    In:  http://aquaticcommons.org/id/eprint/550 | 8 | 2020-08-24 03:50:44 | 550 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: One of the objectives of this report is to document not onlythe ecologic/biological resources of the Napa Marsh but also the aesthetic, recreational, and productive (such as agriculture and salt production) resources of the 73 square miles that once made up a network of wetlands and sloughs and rivers. Thousands of people cross portions of the marsh by automobile every day, undoubtedly assimilating in largely unconscious ways the daily and seasonal ebb and flow of light, colors, birds, clouds and tides. And yet, few stop to consider its value and even fewer have visited or savored its interior waterways and remaining natural marshlands.This report has a second set of objectives: that is, to describe the range of human demands which increasingly threaten parts of the marsh, and to make recommendations which focus on specific problems and offer positive solutions. The recommendations essentially take three forms: preservation and/or acquisition of the most vulnerable parts of the marsh; enhancement of areas that can be restored to tidal action to become once again viable marshland; and protection of the residual values of lands some of which are now committed to other uses but still offer marginal or supplemental habitat to resident and migratory wildlife. It is hoped, then, that this report will be useful to planners, to administrators, to landowners, and to others whose interests are diverse, serving as a guide to decisions which concern both conservation and appropriate development of the Napa Marsh.The report is part of a series of studies of critical California coastal wetlands which have also been addressed to the practical need for management solutions. In addition, this series offers an information resource--in the form of compilations of technical data, interpretive descriptions, and bibliographies--for each of the coastal wetlands which have been identified as critical. This additional information regarding other California coastal wetlandresources and their administration may be obtained from the other reports in the "Coastal Wetland Series" prepared by the California Department of Fish and Game. (145pp.)
    Keywords: Conservation ; Pollution ; Biology ; Environment ; Napa Marsh ; California ; San Pablo Bay ; conservation ; pollution ; natural resources
    Repository Name: AquaDocs
    Type: monograph
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  • 9
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    The natural resources of San Dieguito and Batiquitos Lagoons (2021)
    California Department of Fish and Game | Sacramento, CA
    In:  http://aquaticcommons.org/id/eprint/547 | 8 | 2020-08-24 03:49:52 | 547 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: The California Department of Fish and Game has played a central role in attempting to protect and enhance the remaining 25% of southern California wetlands which have survived the ingress of urbanization and commercialdevelopment since 1900 (U.S. Dept. Interior, 1972). To this end, the Department has published a series of reports documenting California's coastal wetlands resources, including four covering wetlands in southern California (Upper Newport Bay, Frey et al., 1970; Goleta Slough, Spethet al., 1970; Los Penasquitos Lagoon, Mudie et al., 1974; and San Diego Bay, Browning et al., 1973). The following report is an extension of that effort. (131pp.)
    Keywords: Conservation ; Pollution ; Biology ; Environment ; San Dieguito Lagoon ; Batiquitos Lagoon ; California ; Natural resources ; conservation ; pollution
    Repository Name: AquaDocs
    Type: monograph
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  • 10
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    The natural resources of Carpinteria Marsh: their status and future (2021)
    California Department of Fish and Game | Sacramento, CA
    In:  http://aquaticcommons.org/id/eprint/537 | 8 | 2020-08-24 03:48:39 | 537 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-30
    Description: The purpose of this report is: 1) to document the natural resources of Carpinteria Marsh, 2) outline the uses those resources receive, 3) enumerate the problems and conflicts of use that affect those resources, and 4) recommend measures that will protect and enhance the marsh and its resources. It is intended as a guide for citizens, planners and administrators of all private and public entities interested in the status and future of the marsh.This report has been prepared under contract to and fully funded by the Office of Biological Services of the U.S. Fish and Wildlife Service. The goals and purpose of this federal office are to review the impact on fish and wildlife resources of land, mineral and water development practices, such as offshore oil and gas exploration, development andproduction; construction of inshore pipeline canals and refineries; power plant construction/operation and urban development. This report, and five other southern California reports, covering Agua Hedionda (San Diego County), Anaheim Bay-Huntington Harbor (Orange County), Mugu Lagoon(Ventura County), the Northern Santa Barbara County Coastal Wetlands and the Nipomo Dunes and Wetlands (San Luis Obispo County), are scheduled to be part of the Department's "Coastal Wetland Series" that includes reportson the natural resources of Upper Newport Bay (Orange County), Goleta Slough (Santa Barbara county), Bolinas Lagoon (Marin County), Elkhorn Slough (Monterey County), San Diego Bay and Los Penasquitos Lagoon (San Diego County), Morro Bay (San Luis Obispo County), Humboldt Bay andthe Eel River Delta (Humboldt County), Lake Earl and the Smith River Delta (Del Norte County) and Bodega Harbor (Sonoma County). (103pp.)
    Keywords: Ecology ; Pollution ; Biology ; Environment ; natural resources ; Carpinteria Marsh ; California
    Repository Name: AquaDocs
    Type: monograph
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