AndreaBozzo/ceres-open-data-index huggingface dataset:
San Francisco Bay and Sacramento-San Joaquin Delta DEM for Modeling, Version 4.3

# Citation and Main Description:

This product is described in Chapter 5 of the 2018 DWR Delta Modeling Section annual report, produced jointly with USGS.
https://data.cnra.ca.gov/dataset/methodology-for-flow-and-salinity-estimates-in-the-sacramento-san-joaquin-delta-and-suisun-marsh/resource/84d4fd29-c839-4efa-82be-b58f7ed176db

as well as in ESA. Delta Bathymetry Digital Elevation Model Update Project: Technical Report. California Department of Water Resources, 2024 (Draft) 
Available upon request 

# Domain and Product
This product is a mutually compatible suite of DEMs covering most of the aquatic and terrestrial areas of the Bay-Delta. The product was derived from original point data collections, lidar and other DEMs. Also included in the resources are images and shapefiles describing the source data.

Changes between 4.2 and 4.3 are documented in the change log below. Changes before that are recorded on the 4.2 web page.

Changes in version 4 relative to prior products are limited to the region east of the Carquinez Strait (starting around Carquinez Bridge). To facilitate compatibility between products released by DWR and USGS/NOAA partners, DWR distributes the region west of the active work at 10m resolution but does not actively work in this region. The San Pablo Bay boundary of active revision in the present product in a place where its source data matches that of other Bay elevation models, e.g., the 2m seamless high-resolution bathymetric and topographic DEM of San Francisco Bay by USGS Earth Resources Observation and Science Center (EROS) (https://topotools.cr.usgs.gov/coned/sanfrancisco.php ), the 2010 San Francisco Bay DEM by National Oceanic and Atmospheric Administration (https://www.ngdc.noaa.gov/metaview/page?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/741.xml&view=getDataView&header=none ) or the prior (version 3) 10m digital elevation model (https://data.cnra.ca.gov/dataset/san-francisco-bay-and-sacramento-san-joaquin-delta-dem-v3 ).The 10m DEM for the Bay-Delta is based on the first on the list, i.e. EROS’ 2m DEM for the Bay

# Version: 4.3
* Time Completed: March 2025
* Horizontal Datum: NAD83
* Spheroid:GRS1980
* Projection:UTM_Zone_10N (meters)
* Vertical Datum:NAVD88 (meters)

# Changes since 4.2
* Develop 2m DEM for the entirety of the South Delta based on new bathymetric surveys collected between 2021-2022 (DWR, NCRO and Cinquini & Passarino Inc) and 2017 Lidar (DWR)
* Develop 2m DEM of the entirety of the South Delta, including all available terrestrial data that covers the islands into a seamless tile
* Develop 2m DEM of Woodward Cut based on the 2017 Bathymetry Survey (DWR, NCRO) and 2017 LiDAR (DWR) 
* Develop 2m DEM of Railroad Cut based on the 2017 Bathymetry Survey (DWR, NCRO) and 2017 LiDAR (DWR) 
* Minor modification to existing dem_montezuma_sl_2m_20200909.tif : fix alignment problem.
* clip dem_ccfb_south_delta_san_joaquin_rvr_2m_20200625.tif to remove areas that are superseded by the dem_south_delta_2m_20231103.tif. Now called dem_omr_sjr_2m_20200625.tif
Natural Communities Commonly Associated with Groundwater

The Natural Communities dataset is a compilation of 48 publicly available State and federal agency datasets that map vegetation, wetlands, springs, and seeps in California. A working group comprised of DWR, the California Department of Fish and Wildlife (CDFW), and The Nature Conservancy (TNC) reviewed the compiled dataset and conducted a screening process to exclude vegetation and wetland types less likely to be associated with groundwater and retain types commonly associated with groundwater, based on criteria described in Klausmeyer et al., 2018. 

Two habitat classes are included in the Natural Communities dataset: (1) wetland features commonly associated with the surface expression of groundwater under natural, unmodified conditions; and (2) vegetation types commonly associated with the sub-surface presence of groundwater (phreatophytes).

The data included in the Natural Communities dataset do not represent DWRs determination of a GDE. However, the Natural Communities dataset can be used by GSAs as a starting point when approaching the task of identifying GDEs within a groundwater basin.

**Reference**
Klausmeyer, K., Howard J., Keeler-Wolf T., Davis-Fadtke K., Hull R., and Lyons A. (2018). Mapping Indicators of Groundwater dependent ecosystems in California
Tamarack Fire Structure Status

<p style='margin-bottom:0in;'><span style='font-size:12pt; font-family:Arial, sans-serif; color:rgb(102, 102, 102); background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial;'>Use this app to examine the known status of structures damaged by the wildfire. If a structure point does not appear on the map it may still have been impacted by the fire. Specific addresses can be searched for in the search bar. Use the imagery and topographic basemaps and photos to positively identify a structure. Photos may only be available for damaged and destroyed structures.</span></p><p style='margin-bottom:0in;'><span style='font-size:12pt; font-family:Arial, sans-serif; color:rgb(102, 102, 102); background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial;'><br /></span></p><p style='margin-bottom:0in; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial;'><span style='font-size:12pt; font-family:Arial, sans-serif; color:rgb(102, 102, 102);'>For more information about the wildfire response efforts, visit the CAL FIRE <a href='https://www.fire.ca.gov/incidents/' target='_blank' rel='nofollow ugc noopener noreferrer'><span style='color:blue;'>incident page</span></a>.</span></p>
Dixie Fire Structure Status

<p style='margin-bottom:0in;'><span style='font-size:12pt; font-family:Arial, sans-serif; color:rgb(102, 102, 102); background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial;'>Use this app to examine the known status of structures damaged by the wildfire. If a structure point does not appear on the map it may still have been impacted by the fire. Specific addresses can be searched for in the search bar. Use the imagery and topographic basemaps and photos to positively identify a structure. Photos may only be available for damaged and destroyed structures.</span></p><p style='margin-bottom:0in;'><span style='font-size:12pt; font-family:Arial, sans-serif; color:rgb(102, 102, 102); background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial;'><br /></span></p><p style='margin-bottom:0in; background-image:initial; background-position:initial; background-size:initial; background-repeat:initial; background-attachment:initial; background-origin:initial; background-clip:initial;'><span style='font-size:12pt; font-family:Arial, sans-serif; color:rgb(102, 102, 102);'>For more information about the wildfire response efforts, visit the CAL FIRE <a href='https://www.fire.ca.gov/incidents/' target='_blank' rel='nofollow ugc noopener noreferrer'><span style='color:blue;'>incident page</span></a>.</span></p>
Drought Monitoring on South-Central California Coastal Watersheds - 2022-2023

Watersheds included within 2022-2023 South-Central California coast drought monitoring efforts are Chorro, San Luis Obispo, San Simeon, and Santa Rosa Creeks, as well as the Big Sur River.  Continuous water temperature data were collected from multiple stream reaches per watershed using Hobo Tidbit loggers. Discharge (cfs) and instantaneous water temperature and dissolved oxygen concentration were collected weekly at most montiored wateresheds using a Hach 950 flow meter and YSI handheld meter. At San Simeon Creek, water quality (dissolved oxygen, temperature, salinity) profiles were taken in the estuary. Ocean connectivity was assessd visually at most watersheds on a weekly basis. The longitudinal extent of wetted channel (wet-dry mapping) was assessed using Survey123 at each stream at several points throughout 2022 and the results were imported into ArcGIS. Steelhead stranding events ansd mortalities were assessed and the number of individuals impacted were recorded. 

This data and metadata were submitted by California Department of Fish and Wildlife (CDFW) Staff though the Data Management Plan (DMP) framework with the id: DMP000541. For more information, please visit https://wildlife.ca.gov/Data/Sci-Data.
Hexagon (HxGN) Imagery Extents California

<div style='text-align:Left;'><p><span>Extent boundaries for sets of Hexagon (HxGN) imagery made available through State of California Department of Technology Agreement.  Since some services provided by HxGN include multiple sets of imagery, this layer will help users determine where the sets are located geographically. To create this layer, the California Department of Fish and Wildlife subsetted seamline layers</span> provided by Hexagon. This extent layer has no access constraints but per the Agreement, the imagery has the following constraints: &quot;The following entities shall be allowed unlimited access licenses to the imagery provided under this contract: 2.1. All State Government Agencies, Public Entities, and Regents-level institutions including all University of California and California State University institutes. 2.2. All County-level governments. 2.3. All Municipal (city) governments. 2.4. All Public Safety Answering Points. 2.5. Any subcontractor or organization holding an active contract to conduct work on behalf of the entities identified in 2.1 through 2.4 above. 2.6. All federal or state recognized tribal organizations.&quot;</p><p>Seamline layers with dates for the imagery are <a href='https://filelib.wildlife.ca.gov/Public/BDB/GIS/Hexagon/' target='_blank' rel='nofollow ugc noopener noreferrer'>available via separate download here</a>.</p></div>
CA State Senate Districts and Membership 2025-2030

This is the last boundary change until the next redistricting following the 2030 Census. All of the districts now reflect the 2021 Citizens Redistricting Commission(CRC) plan. The only thing that will change is the members' names and parties as elections are held, appointments are made, or party affiliations change.<div><br /></div><div>Senate Districts feature layer is updated as-needed and we expect to update it more regularly in the future.</div><div><br /></div><div><div style='font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;'>Schema:</div><div style='font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;'>F2020_POP: The 2020 population of the district as reported by the census.<br />F2020_HU: Number of housing units in the district in 2020 as reported by the census.</div><div style='font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;'>CRC_POP: Citizen's Redistricting Commission population.</div><div style='font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;'>District: The District is the district number.</div><div style='font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;'>Party: The Party is the party represented.</div><div style='font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;'>last_name: The last name is the last name of the representative.<br />first_name: The first name is the first name of the representative.<br />district_website: The district website is the link to the district website.</div></div><div style='font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;'><br /></div><div style='font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;'>For more information about the F2020_Pop and the F2020_HU visit: <br /><a href='https://www.census.gov/programs-surveys/decennial-census/about/rdo/summary-files.html' style='font-family:&quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; font-size:15px;' target='_blank' rel='nofollow ugc noopener noreferrer'>https://www.census.gov/programs-surveys/decennial-census/about/rdo/summary-files.html</a></div>
CAL FIRE Administrative Units

<div><span>Throughout the state, CAL FIRE has 21 
operational units that are designed to address fire suppression over a 
certain geographic area. Each unit operates within their local 
jurisdiction and strives to fulfill the department's mission whether it 
be responding to all-risk emergencies, participating in fire safety 
education and educating homeowners on how to keep their property fire 
safe. <br /></span></div><div><span><br /></span></div><div><span>In addition, CAL FIRE </span><span>provides funding to six 'Contract Counties' (</span><span>Kern, Los Angeles, Marin, Orange, Santa Barbara and Ventura) for fire protection services, 
including wages of suppression crews, lookouts, maintenance of fire 
fighting facilities, fire prevention assistants, pre-fire management 
positions, dispatch, special repairs, and administrative services. The 
Department's budget also provides for infrastructure improvements, and 
expanded fire fighting needs when fires grow beyond initial attack. </span>Contract Counties are responsible for providing initial response to 
fires on SRA. When a wildland fire escapes this initial attack, CAL FIRE
 responds with fire fighting resources to assist the county.</div><div><br /></div><span style='font-family:&quot;Avenir Next W01&quot;, &quot;Avenir Next W00&quot;, &quot;Avenir Next&quot;, Avenir, &quot;Helvetica Neue&quot;, sans-serif; font-size:16px;'>This service represents the latest official version of the CAL FIRE Administrative Units dataset, and is updated whenever a new version is released. As of May 2023, it represents cdfadmin23_1. </span>
CalEnviroScreen 4.0 Data Dashboard and User Guide

<p>CalEnviroScreen 4.0 was released in October 2021 as part of continued efforts by the CalEPA’s Office of Environmental Health Hazard Assessment to map cumulative impacts of environmental health conditions across California. For more information on CalEnviroScreen, please visit our website or see our report. </p><p>The CalEnviroScreen 4.0 Data Dashboard is an interactive online tool used for filtering and visualizing the latest CalEnviroScreen data. This tool enables users to select areas of interest based on various geographies, CalEnviroScreen scores, percentile ranges or thresholds for any combination of the 21 CalEnviroScreen indicators. It can also select areas by ethnic or racial makeup. Users can view data summaries and maps that update automatically as different filters are selected and applied. All the results are downloadable as a spreadsheet. </p>
Saline Wetlands - ACE [ds2864]

<div style='text-align:Left;'><div><div><p><span><span>For more information, see the Terrestrial Significant Habitats Factsheet at </span><a href='https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=150834' style='text-decoration:underline;' rel='nofollow ugc'><span>https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=150834</span></a><span>. </span></span></p><p><span><span>The California Department of Fish and Wildlife’s (CDFW) Areas of Conservation Emphasis (ACE) is a compilation and analysis of the best-available statewide spatial information in California on biodiversity, rarity and endemism, harvested species, significant habitats, connectivity and wildlife movement, climate vulnerability, climate refugia, and other relevant data (e.g., other conservation priorities such as those identified in the State Wildlife Action Plan (SWAP), stressors, land ownership). ACE addresses both terrestrial and aquatic data. The ACE model combines and analyzes terrestrial information in a 2.5 square mile hexagon grid and aquatic information at the HUC12 watershed level across the state to produce a series of maps for use in non-regulatory evaluation of conservation priorities in California. The model addresses as many of CDFWs statewide conservation and recreational mandates as feasible using high quality data sources. High value areas statewide and in each USDA Ecoregion were identified. The ACE maps and data can be viewed in the ACE online map viewer, or downloaded for use in ArcGIS. For more detailed information see </span></span><a href='https://www.wildlife.ca.gov/Data/Analysis/ACE' style='text-decoration:underline;' rel='nofollow ugc'><span><span>https://www.wildlife.ca.gov/Data/Analysis/ACE</span></span></a><span> and </span><a href='https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=24326' style='text-decoration:underline;' rel='nofollow ugc'><span><span>https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=24326</span></span></a><span><span>. </span></span></p></div></div></div>
Saline Wetlands by Watershed - ACE [ds2766]

<div style='text-align:Left;'><div><div><p style='margin:0 0 7 0;'><span><span>For more information, see the Aquatic Significant Habitats Factsheet at </span><a href='https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=150855' style='text-decoration:underline;' rel='nofollow ugc'><span>https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=150855</span></a><span>. </span></span></p><p style='margin:0 0 7 0;'><span><span>The California Department of Fish and Wildlife’s (CDFW) Areas of Conservation Emphasis (ACE) is a compilation and analysis of the best-available statewide spatial information in California on biodiversity, rarity and endemism, harvested species, significant habitats, connectivity and wildlife movement, climate vulnerability, climate refugia, and other relevant data (e.g., other conservation priorities such as those identified in the State Wildlife Action Plan (SWAP), stressors, land ownership). ACE addresses both terrestrial and aquatic data. The ACE model combines and analyzes terrestrial information in a 2.5 square mile hexagon grid and aquatic information at the HUC12 watershed level across the state to produce a series of maps for use in non-regulatory evaluation of conservation priorities in California. The model addresses as many of CDFWs statewide conservation and recreational mandates as feasible using high quality data sources. High value areas statewide and in each USDA Ecoregion were identified. The ACE maps and data can be viewed in the ACE online map viewer, or downloaded for use in ArcGIS. For more detailed information see </span></span><a href='https://www.wildlife.ca.gov/Data/Analysis/ACE' style='text-decoration:underline;' rel='nofollow ugc'><span><span>https://www.wildlife.ca.gov/Data/Analysis/ACE</span></span></a><span> and </span><a href='https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=24326' style='text-decoration:underline;' rel='nofollow ugc'><span><span>https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=24326</span></span></a><span>. </span></p></div></div></div>
Seeps and Springs - ACE [ds2731]

<div style='text-align:Left;'><div><div><p><span><span>For more information, see the Terrestrial Significant Habitats Factsheet at </span><a href='https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=150834' style='text-decoration:underline;' rel='nofollow ugc'><span>https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=150834</span></a><span>. </span></span></p><p><span><span>The California Department of Fish and Wildlife’s (CDFW) Areas of Conservation Emphasis (ACE) is a compilation and analysis of the best-available statewide spatial information in California on biodiversity, rarity and endemism, harvested species, significant habitats, connectivity and wildlife movement, climate vulnerability, climate refugia, and other relevant data (e.g., other conservation priorities such as those identified in the State Wildlife Action Plan (SWAP), stressors, land ownership). ACE addresses both terrestrial and aquatic data. The ACE model combines and analyzes terrestrial information in a 2.5 square mile hexagon grid and aquatic information at the HUC12 watershed level across the state to produce a series of maps for use in non-regulatory evaluation of conservation priorities in California. The model addresses as many of CDFWs statewide conservation and recreational mandates as feasible using high quality data sources. High value areas statewide and in each USDA Ecoregion were identified. The ACE maps and data can be viewed in the ACE online map viewer, or downloaded for use in ArcGIS. For more detailed information see </span></span><a href='https://www.wildlife.ca.gov/Data/Analysis/ACE' style='text-decoration:underline;' rel='nofollow ugc'><span><span>https://www.wildlife.ca.gov/Data/Analysis/ACE</span></span></a><span> and </span><a href='https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=24326' style='text-decoration:underline;' rel='nofollow ugc'><span><span>https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=24326</span></span></a><span><span>.</span></span></p></div></div></div>
Monarch Overwintering Areas - ACE [ds2861]

<div style='text-align:Left;'><div><div><p><span><span>For more information, see the Terrestrial Significant Habitats Factsheet at </span><a href='https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=150834' style='text-decoration:underline;' rel='nofollow ugc'><span>https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=150834</span></a><span>. </span></span></p><p><span><span>The California Department of Fish and Wildlife’s (CDFW) Areas of Conservation Emphasis (ACE) is a compilation and analysis of the best-available statewide spatial information in California on biodiversity, rarity and endemism, harvested species, significant habitats, connectivity and wildlife movement, climate vulnerability, climate refugia, and other relevant data (e.g., other conservation priorities such as those identified in the State Wildlife Action Plan (SWAP), stressors, land ownership). ACE addresses both terrestrial and aquatic data. The ACE model combines and analyzes terrestrial information in a 2.5 square mile hexagon grid and aquatic information at the HUC12 watershed level across the state to produce a series of maps for use in non-regulatory evaluation of conservation priorities in California. The model addresses as many of CDFWs statewide conservation and recreational mandates as feasible using high quality data sources. High value areas statewide and in each USDA Ecoregion were identified. The ACE maps and data can be viewed in the ACE online map viewer, or downloaded for use in ArcGIS. For more detailed information see </span></span><a href='https://www.wildlife.ca.gov/Data/Analysis/ACE' style='text-decoration:underline;' rel='nofollow ugc'><span><span>https://www.wildlife.ca.gov/Data/Analysis/ACE</span></span></a><span> and </span><a href='https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=24326' style='text-decoration:underline;' rel='nofollow ugc'><span><span>https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=24326</span></span></a><span><span>. </span></span></p></div></div></div>