Description: Coastal Sediment Management Workgroup (CSMW) efforts are primarily coordinated through development of the California Sediment Master Plan (SMP), which lays out a number of objectives, goals and tasks to implement Regional Sediment Management (RSM) throughout coastal California. A fundamental principle of RSM is the application and placement of sediment within a regional area of the coast to address problems such as eroding beaches. Consequently, the CSMW has determined that the SMP effort needs to identify Beach Erosion Concern Areas (BECAs) where current or historical erosion is of concern to state, federal or local entities, or CSMW members. The list is periodically updated with information from completed Coastal RSM Plans; listing source specifies entities identifying the concern.
Copyright Text: Coastal Sediment Management Workgroup, Clif Davenport, CALIFORNIA BEACH EROSION ASSESSMENT SURVEY 2010, October 2010. James Zoulas (CESPN-ET-EI), March 2014. Everest International Consultants, Inc., October 2015.
Description: Coastal Sediment Management Workgroup (CSMW) efforts are primarily coordinated through development of the California Sediment Master Plan (SMP), which lays out a number of objectives, goals and tasks to implement Regional Sediment Management (RSM) throughout coastal California. A fundamental principle of RSM is the application and placement of sediment within a regional area of the coast to address problems such as eroding beaches. Consequently, the CSMW has determined that the SMP effort needs to identify Beach Erosion Concern Areas (BECAs) where current or historical erosion is of concern to state, federal or local entities, or CSMW members. The list is periodically updated with information from completed Coastal RSM Plans; listing source specifies entities identifying the concern.
Copyright Text: Coastal Sediment Management Workgroup, Clif Davenport, CALIFORNIA BEACH EROSION ASSESSMENT SURVEY 2010, October 2010. James Zoulas (CESPN-ET-EI), March 2014. Everest International Consultants, Inc., October 2015.
Description: This is a dataset of beach nourishment history for the California Coastline from the 1920s to 2000. The original data was in tabular form (an Excel spreadsheet) and was compiled by Melanie Coyne while she was a NOAA fellow with the California Coastal Commission in the year 2000, and updated by CSMW in 2008. The original data is included with this dataset and is titled: beach_nourishment_history.xls.The locations of the nourishment projects listed in the table were digitized as points onto a 1:24k shoreline. It is important to note that the exact x and y location of the nourishment project is often unknown, and so the location is an approximation. The data table for this shapefile contains the beach nourishment history data. Each line may represent one or many beach nourishment events, the Date field will list multiple dates if applicable. All files in this dataset were originally projected in NAD83 Teale Albers, reprojected to WGS 1984 by USACE GIS Analyst. The original beach nourishment line shapefile had many truncated values, USACE GIS Analyst increased field character lengths to accommodate all information from the original source Excel File.
Description: Dredge material placement sites (DMPS), including active, inactive, proposed and historical placement sites. Dataset covers US Army Corps of Engineers San Francisco and Los Angeles District project areas and includes Delta, Sacramento and Stockton sites. Sites were digitized from numerous sources, please consult feature level metadata, which is available through the San Francisco eCoastal Manager. General horizontal accuracy +/-200 feet (will vary depending on source).
Copyright Text: US Army Corps of Engineers, Environmental Protection Agency, Department of Water Resources Delta Levees Program, Krishna Raichura (Applied Water Resources Corporation)
Description: A total of 27 possible placement sites (some with multiple placement footprints) are incorporated into this San Diego Coastal Regional Sediment Management Plan to enable the greatest flexibility in sediment management. The majority of the sites have been used previously for sediment placement and some footprints have been enlarged to accommodate more sediment. Seven new sites are nearshore placement sites (off South Oceanside outside of a previous USACE placement area, off Batiquitos, off Cardiff State Beach, off San Dieguito Lagoon, off Torrey Pines State Beach, off Mission Beach, and off Coronado). The suite of receiver sites are proposed to maximize environmental sensitivity of long-term sediment placement within the region by spreading the placed sediment volume over more numerous and larger areas to reduce cumulative impacts (i.e., burial of sensitive resources, turbidity near bird nesting/foraging areas).Modifications to some onshore sand placement sites may occur as part of the ongoing RBSP II planning effort. Certain cities have indicated a desire for either more or less sediment and for placement at slightly different locations other than those included in RBSP I. Therefore, some of the placement locations currently shown may change slightly in future adaptations to the Coastal RSM Plan.Data created by Moffatt & Nichol (March 2009) as part of GIS inventory for the Coastal Regional Sediment Management Plan for the San Diego Region.
Copyright Text: Moffatt & Nichol, San Diego Association of Governments (SANDAG), California Coastal Sediment Management Workgroup
Description: PWA and Griggs (2004) defined three risk categories to Monterey Regional Water Pollution Control Agency (MRWPCA) facilities between Marina and Wharf II. These risk categories were determined by assuming that current long-term historic erosion rates would continue over the next 50 years. For this Coastal RSM Plan assessment of critical areas of erosion, the historic erosion rate results of Thornton et al. (2006) are used with an increment of approximately 20% added to the erosion rate for potential increases due to future sea-level rise. The risk categories are: Low risk - facilities with a low probability of being impacted by erosion over the next 50 years. Moderate risk - facilities not likely to be affected by chronic erosion over the next 50 years, but potentially susceptible to short-term storm event erosion within the planning horizon. High risk - facilities that are located seaward of the shoreline position anticipated in 50 years or presently vulnerable to short-term event-based erosion. A high risk designation also applies to facilities with shore protection (presently or approved), where erosion isimpacting public safety and access, and reducing the shoreline recreational value.Future erosion rates could be lower if beach-sand mining ceases. In this case, moderate and high risk facilities would have a larger buffer zone of protection, and management action could be delayed beyond the time lines recommended in this Coastal RSM Plan. Conversely, erosion rates may increase if future sea-level rise accelerates over the predicted estimates (Section 2.4), and management may need to be more immediate.All the facilities identified as at high or moderate risk of erosion were then assessed as to their future value. This assessment is based on the SMBCEW (2006c) evaluation of the economic (potential loss of facility), environmental (potential loss of habitat), and safety and human health (potential loss of life) consequences of loss of the facility. The facilities are designated as high consequence, moderate consequence, or low consequence. The shapefile was compiled by PWA and submitted to CSMW as part of the Southern Monterey Bay Coastal Regional Sediment amanagement Plan (AMBAG, 2008).
Copyright Text: Philip Williams & Associates, Ltd (PWA), Association of Monterey Bay Area Governments (AMBAG), Coastal Sediment Management Workgroup
Description: Given the location of the critical areas of erosion and the need to avoid adverse impacts to local sensitive habitat, the Southern Monterey Bay Coastal RSM Plan recommends that the coastal area between Wharf II in Monterey to Marina be considered as potential receiver site locations for both subaerial beach and nearshore sand placement. For the latter, the area between the Monterey Beach Resort and the Ocean Harbor House condominiums is considered suitable for three main reasons: The net alongshore sediment transport rate is low and to the north, but the gross transport rate is high in both northerly and southerly directions. This location is fairly central to the southern bight and would allow the sand to be transported most effectively along the whole shoreline. Sand placed at a location further to the north would be unlikely to disperse sufficiently to cover critical areas of erosion towards Monterey Harbor given the overall net transport to the north, and placement further to the south would be too close to the sensitive habitat located offshore. This location is far enough away from the sensitive kelp, eelgrass and rocky reef habitat so as not to cause disturbance through sedimentation or turbidity during construction and post-construction phases of the project. The location is relatively close to a potential stockpile area proposed at Fort Ord where inland sediments, if they become available, could be placed temporarily until a beach nourishment maintenance-style project could be developed. Road access to the location is available. Beach nourishment would occur within the Cities of Sand City, Seaside, and Monterey. The shapefile showing this location was compiled by PWA as a recommendation in the Southern Monterey Bay Coastal Regional Sediment Management Plan (AMBAG, 2008).
Copyright Text: Philip Williams & Associates, Ltd. (PWA), Association of Monterey Bay Area Governments (AMBAG), Coastal Sediment Management Workgroup
Description: Several criteria were used for beach selection. BEACON 's Coastal Regional Sediment Management Plan included all of the most popular beaches in the two counties along with a number of smaller beaches (e.g., “Oil Piers” beach) which are under consideration for beach preservation projects. While we have not included every single beach in the two counties, this study covers all of the beaches that should be of interest to regional planners.Appendix C - Economic Analysis of the BEACON Coast lists of all the beaches in the study area along with a brief description of the beach, in particular its recreational amenities. The shapefile was compiled by Noble Consultants for the Ventura/Santa Barbara Coastal Regional Sediment Management Plan (BEACON, 2009)Appendix C - Economic Analysis of the BEACON Coast lists of all the beaches in the study area along with a brief description of the beach, in particular its recreational amenities.
Copyright Text: Noble Consultants , Beach Erosion Authority for Clean Oceans and Nourishment (BEACON), California Coastal Sediment Management Workgroup, U.S. Army Corps of Engineers Los Angeles District
Description: Harbor reciever sites from Everest (2009) "Harbor Area Management Plan, In-Harbor Beach Replenishment Strategy", Technical Report. Prepared for Harbor Resources Division, City of Newport Beach with HAMP Team: Weston Solutions. June, 2009.Other receiver sites compiled from professional experience in the project area.The shapefile was compiled by Everest International Consultants, Inc. and submitted to the Coastal Sediment Management Workgroup as part of the Orange County Coastal Regional Sediment Management Plan (2012).
Copyright Text: Everest International Consultants, Inc.
Description: The sites listed herein contain potential beaches within Orange County that can receive nourishment sediment. These sites have been identified in previous efforts as either in need or have received nourishment in the past. These could potentially be used in conjunction with sediment sources to serve purposes of coastal regional sediment management.The shapefile was compiled by Everest International Consultants, Inc. and submitted to the Coastal Sediment Management Workgroup as part of the Orange County Coastal Regional Sediment Management Plan (2012).
Copyright Text: Everest International Consultants, Inc.
Description: Offshore borrow sites as identified originally in the California Shoreline Database compiled by Noble Consultants (Jon Moore). Later updates to the dataset by the Beacon Coastal Sediment Regional Master Plan (CSRMP) for Ventura and Santa Barbara counties. This dataset is the lastest version, last updated in September 2009.
Description: Harbor locations as identified originally in the California Shoreline Database compiled by Noble Consultants (Jon Moore) for DBW. Later updates to the dataset were incorporated by John Carotta for CSMW in 2009.
Name: Potential Coastal and Upland Sediment Sources
Display Field: NAME
Type: Feature Layer
Geometry Type: esriGeometryPoint
Description: Upland debris basins and coastal borrow sites as identified originally in the California Shoreline Database compiled by Noble Consultants (Jon Moore). Later updates to the dataset by the BEACON, SANDAG and AMBAG Coastal Sediment Regional Master Plans (CSRMPs) for Ventura and Santa Barbara counties, San Diego County and Southern Monterey Bay, respectively.The upland borrow sites are from the lastest version of the data, last updated in September 2009. Changes include: added Sed_Source (type of sediment potentially available) and DataSource (identifies from where the data point was most recently identified) attributes. Layer now reflects various types of sediment sources in addition to debris basins, and includes locations from San Diego and Southern Monterey Bay Coastal Regional Sediment Management Plans.Coastal and nearshore sediment borrow sites were added into this dataset in May 2012.
Copyright Text: Jon Moore, Noble Consultants; Chris Webb, Moffatt & Nichol; Bob Battalio, PWA
Description: The National Inventory of Dams (NID) is a congressionally authorized database, which documents dams in the U.S. and its territories. The NID was most recently reauthorized in the Dam Safety Act of 2006. The current NID, published in 2010, includes information on 84,000 dams that are more than 25 feet high, hold more than 50 acre-feet of water, or are considered a significant hazard if they fail. The NID is maintained and published by USACE, in cooperation with the Association of State Dam Safety Officials (ASDSO), the states and territories, and federal dam-regulating agencies. The database contains information about the dam’s location, size, purpose, type, last inspection, regulatory facts, and other technical data. The information contained in the NID is updated approximately every two years.The 2010 NID includes information on approximately 84,000 dams of which 80 percent are regulated by the State Dam Safety Offices and almost 70 percent of the entire inventory is privately-owned dams. The federal government owns only 4% of the total NID, which includes approximately 40% of the tallest dams. From the 2010 NID, 13,990 dams are classified as high hazard potential, 12,662 significant, 57,362 low and 116 undetermined. Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life. Significant hazard potential are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss. Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/ or environmental losses. Losses are principally limited to the owner’s property. This hazard potential classification does not indicate the condition of the dam. There are approximately 2,000 more dams listed as high hazard potential than the previous NID.
Description: Offshore borrow sites as identified originally in the California Shoreline Database compiled by Noble Consultants (Jon Moore). Later updates to the dataset by the Beacon Coastal Sediment Regional Master Plan (CSRMP) for Ventura and Santa Barbara counties. This dataset is the lastest version, last updated in September 2009.
Description: Upland debris basins and coastal borrow sites as identified originally in the California Shoreline Database compiled by Noble Consultants (Jon Moore). Later updates to the dataset by the BEACON, SANDAG and AMBAG Coastal Sediment Regional Master Plans (CSRMPs) for Ventura and Santa Barbara counties, San Diego County and Southern Monterey Bay, respectively.The upland borrow sites are from the lastest version of the data, last updated in September 2009. Changes include: added Sed_Source (type of sediment potentially available) and DataSource (identifies from where the data point was most recently identified) attributes. Layer now reflects various types of sediment sources in addition to debris basins, and includes locations from San Diego and Southern Monterey Bay Coastal Regional Sediment Management Plans.Coastal and nearshore sediment borrow sites were added into this dataset in May 2012.
Copyright Text: Jon Moore, Noble Consultants; Chris Webb, Moffatt & Nichol; Bob Battalio, PWA
Description: Three main criteria are used as an initial basis for screening source locations; availability of large quantities of beach compatible sand, levels of contamination, and the location of the source relative to the potential southern Monterey Bay receiver site. Sediments with contamination are typically eliminated from further consideration for beach nourishment. Potential sources are then targeted, using the Tier I evaluation criteria of the Sand Compatibility and Opportunistic Use Program (SCOUP) Plan (Moffatt and Nichol Engineers, 2006), for more detailed compatibility studies. In this Coastal RSM Plan, available information was collated on the physical and chemical characteristics of the potential source sediments. The essential data include particle size, and chemical signatures (metals and other analytes). This is defined as a Tier I analysis in the SCOUP (Moffatt and Nichol Engineers, 2006). From these data, provisional recommendations are made regarding the suitability of the source sediments for placement at the potential receiver site, which should then be carried forward into a more detailed Tier II analysis. Tier II analysis requires sampling and testing for particle size distribution, chemistry, and physical properties, at each of the source sites and the potential receiver site providing a definitive statement regarding the suitability of the source sediments for placement at the receiver site. The Tier I analysis carried out for this Coastal RSM Plan targets five potential sources of sand for beach nourishment, which are described in Sections 6.1 to 6.5. Locations compiled by PWA for Southern Monterey Bay Coastal Regional Sediment Management Plan (AMBAG, 2008).
Copyright Text: Philip Williams & Associates, Ltd (PWA), Association of Monterey Bay Area Governments (AMBAG), Coastal Sediment Management Workgroup
Name: Santa Barbara Coastal and Inland Sediment Sources
Display Field: Name
Type: Feature Layer
Geometry Type: esriGeometryPoint
Description: Relic sediment deposits within the Goleta Slough, Carpinteria Salt Marsh, Ormond Beach wetlands, and Mugu Lagoon contain unknown reserves of sand that may present opportunities for one time or more regular beach nourishments. The Goleta Slough is already being regularly dredged by Santa Barbara County to remove significant volumes of sediment that accumulates within the slough channels. The feasibility of extracting beach compatible sand from the other environmentally sensitive areas is subject to further study and review. Debris basins have been built within critical watershed pathways to provide flood protection for developed areas downstream. However the barriers trap sediments that would otherwise be naturally carried downstream to the shoreline. A number of these structures exist throughout Santa Barbara and Ventura Counties. The barriers typically trap mixtures of sand, silt, clay and other debris that periodically requires removal to restore flood storage capacity of the basin. Locations compiled by Noble Consultants for the Shoreline Survey and updated for BEACONs Coastal Regional Sediment Management Plan.
Copyright Text: Noble Consultants, Beach Erosion Authority for Clean Oceans and Nourishment (BEACON), California Coastal Sediment Management Workgroup, U.S. Army Corps of Engineers Los Angeles District
Name: Santa Barbara Potential Offshore Sand Sources
Display Field: Name
Type: Feature Layer
Geometry Type: esriGeometryPoint
Description: Offshore sand sources exist at four known locations and potentially other yet to be explored regions within the nearshore coastal shelf. Significant reserves of fine sand have been identified offshore of Goleta County Beach, Santa Barbara East Beach, Carpinteria Beach, and the Santa Clara River delta. These deposits, totaling in the millions of cubic yards, constitute the most significant resource of sand that is available for beach renourishment and supplementation of littoral sediment budgets. Locations compiled by Noble Consultants for the Shoreline Survey.
Copyright Text: Noble Consultants, Beach Erosion Authority for Clean Oceans and Nourishment (BEACON), California Coastal Sediment Management Workgroup, U.S. Army Corps of Engineers Los Angeles District
Name: Los Angeles County Offshore Sediment Deposits
Display Field: Site_Name
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: The U.S. Army Coastal Engineering Research and Development Center (ERDC) made the first assessment of the potential of this offshore sediment reserve in Santa Monica Bay between 1973 and 1978. Three sites between Santa Monica and Torrance County Beach were estimated to contain about 26 million cubic yards of suitable beach sand. Osborne et al (1983) performed a more detailed reconnaissance level inventory of the four sites identified by the Corps of Engineers. They surveyed the nearshore shelf between the submarine canyons at Point Dume and Palos Verdes Point. Highresolution seismic reflection profiles were taken and limited vibracore drilling performed to delineate the extent and volume of potential sand deposits. The studies by Osbourne identified a fifth potential offshore borrow site north of Marina del Rey.More recent studies to locate suitable off shore sand closer to west Malibu have not been successful as the sediment was found to be too fine grained for beach nourishment.Two CAD files were submitted by Noble Consultants, Inc. and Larry Paul and Associates to CSMW as part of the Los Angeles County Coastal Regional Sediment Management Plan (2011).
Copyright Text: Noble Consultants Inc., Larry Paul and Associates, Coastal Sediment Management Workgroup
Description: Offshore borrow sites as identified originally in the California Shoreline Database compiled by Noble Consultants (Jon Moore). Later updates to the dataset by the Beacon Coastal Sediment Regional Master Plan (CSRMP) for Ventura and Santa Barbara counties. This dataset is the lastest version, last updated in September 2009.
Description: Harbor locations as identified originally in the California Shoreline Database compiled by Noble Consultants (Jon Moore) for DBW. Later updates to the dataset were incorporated by John Carotta for CSMW in 2009.
Description: Upland debris basins and coastal borrow sites as identified originally in the California Shoreline Database compiled by Noble Consultants (Jon Moore). Later updates to the dataset by the BEACON, SANDAG and AMBAG Coastal Sediment Regional Master Plans (CSRMPs) for Ventura and Santa Barbara counties, San Diego County and Southern Monterey Bay, respectively.The upland borrow sites are from the lastest version of the data, last updated in September 2009. Changes include: added Sed_Source (type of sediment potentially available) and DataSource (identifies from where the data point was most recently identified) attributes. Layer now reflects various types of sediment sources in addition to debris basins, and includes locations from San Diego and Southern Monterey Bay Coastal Regional Sediment Management Plans.Coastal and nearshore sediment borrow sites were added into this dataset in May 2012.
Copyright Text: Jon Moore, Noble Consultants; Chris Webb, Moffatt & Nichol; Bob Battalio, PWA
Name: San Diego Coastal and Upland Sediment Sources
Display Field: PROJECT_TI
Type: Feature Layer
Geometry Type: esriGeometryPoint
Description: Sediment sources of interest to this Coastal RSM Plan exist seaward of the coastal watershed drainage divide. These sources generally are more plentiful downstream and closer to the coast and less abundant farther inland, due to topography and greater intensity of development. The SCOUP document (2006) inventories upland sediment sources that include development sites, dry river beds, dry flood control channels, dry sediment detention basins, and roadway widening projects. This CRSM Plan updates that upland sediment source inventory. Sources are diverse, but generally are most numerous within drainage courses such as water-related infrastructure (flood control). Upland sand sources are referred to as opportunistic beach fill in this CRSM Plan.Most viable upland sources exist within the coastal zone, with fewer cost-effective sources located away from the coast. Potential sources of upland sediment include construction projects, highway widening, and various flood control structure. Sediment detention basins could also possibly provide a sustained source of sand. Temporary sediment stockpiling will likely be necessary to facilitate truck delivery from upland sources to the coast. Constraints to delivering upland sediment to the coast include prohibitive trucking transport costs, and limited time windows during the year when trucks can access the beach due to environmental, recreational, or public safety concerns. An additional constraint on upland and wetland restoration sources is the sand size and gradation that can be placed at the beach. An on-going study by the CSMW and its state, federal, and local partners (Tijuana Estuary Sediment Fate and Transport Science Study) is assessing the turbidity and sedimentation impacts associated with upland source materials containing a relatively high percentage of fine-grained sediment. Locations compiled by Moffatt & Nichol for the San Diego Coastal Regional Sediment Management Plan.
Copyright Text: Moffatt & Nichol, San Diego Association of Governments (SANDAG), California Coastal Sediment Management Workgroup
Description: Offshore sediment sources along the entire reach of the San Diego Coastal RSM Plan region were previously identified by SANDAG and used for Regional Beach Sand Projects (RBSP I) in 2001, and a few additional potential borrow sites were identified during development of the San Diego Region Coastal Regional Sediment Management Plan. Ten offshore borrow sites were previously investigated as part of RBSP I.SANDAG investigated many of the offshore potential sand deposits in 2008 as part of RBSP II. They used high resolution, multi-channel seismic technology along the entire region as a first step to identify candidate sites (Fugro 2008). This was followed by vibracoring at specific locations to retrieve, examine, and analyze physical samples (Alpine 2008). These recent sand investigations have yielded preliminary results of sand quality and quantity at the new sites, and at some of the previous sites as well. Sand quality as related to whether the deposits at those locations could be appropriate for beach restoration was assessed as: SM-1 is suitable to good; SO-7 yields no more sand; SO-6 is good to excellent; SO-5 is excellent (the investigation moved farther inshore than the area dredged in 2001); TP-1 is marginal; MB-1 is excellent; ZS-1 is poor; and SS-1 is suitable to good.Locations compiled by Moffatt & Nichol for the San Diego Coastal Regional Sediment Management Plan.
Copyright Text: Moffatt & Nichol, San Diego Association of Governments (SANDAG), California Coastal Sediment Management Workgroup