File Geodatabase Feature Class
Tags
Suisun Marsh, California Department of Water Resources, California Department of Fish and Wildlife, National Vegetation Classification Standard, NVCS, Manual of California Vegetation, MCV, San Francisco Bay Delta, Solano County
This is part of an ongoing monitoring project that the Biogeographic Data Branch (BDB) of the California Department of Fish and Wildlife (CDFW), in collaboration with the Department of Water Resources (DWR) and the CDFW Bay Delta Region (BDR), started in 1999 to track changes in the Suisun Marsh vegetation over time. This is the seventh update using the current mapping standards since the original map was made in 1999. Previous vegetation maps can be viewed and downloaded using the online CDFW Biogeographic Information and Observation System (BIOS) and the links to the associated reports included in the metadata. The reports can also be downloaded from the CDFW website ( http://www.dfg.ca.gov/biogeodata/vegcamp/veg_classification_reports_maps.asp) . The report associated with this map is available for download at: https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=218048&inline The mapped project area in 2018 was 91,486 acres. The Suisun Bay made up 24.2% of this area, tidal sloughs made up 3.6%, and areas mapped as vegetation or land use (such as roads or development) made up 72.2%. Of the vegetation and land use area, 15.9% was tidally influenced and the rest was leveed. The current map consists of 39,566 polygons, while the 2015 map had 29,034 polygons. Part of this increase can be attributed to new non-native species occurrences, which do not have a minimum mapping unit. Better imagery and additional field data may have also contributed to the increase in polygons. The total mapped acreage of vegetation changes slightly with each map update due to the tide level at the time the imagery was acquired and channel erosion or accretion since the area was last mapped.
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Vegetation delineations based on photo interpretation and formal vegetation classification plus change detection. This update by the Geographical Information Center (GIC) of the North State Planning and Development Collective at California State University, Chico is part of an ongoing triennial vegetation monitoring program for the Suisun Marsh. The project tracks changes in the Suisun Marsh vegetation over time to fulfill specific permit requirements of the Suisun Marsh Plan of Protection of 1984, the Suisun Marsh Preservation Agreement of 1986, and the 2015 Suisun Marsh Preservation Agreement. This is the seventh update using the current mapping standards originally implemented in 1999. All of the previous vegetation maps from 1999 to 2015 can be viewed and downloaded using the online California Department of Fish and Wildlife (CDFW) Biogeographic Information and Observation System (BIOS); the links to the associated reports are included in the map metadata. </SPAN></P><P><SPAN>Minimum mapping unit (MMU): Typically, the minimum mapping size is 0.25 acres. However, the photo interpreters use their best judgment to determine if a stand below 0.25 acre should be separately delineated. For example, a smaller polygon would be appropriate for any new visible occurrence of a non-native species of concern, such as Phragmites australis, Arundo donax, Carpobrotus edulis, Eucalyptus spp., and Lepidium latifolium.</SPAN></P><P><SPAN>Minimum mapping width: There are many long and narrow polygons within the Suisun Marsh study area, most of which are roads, ditches, levees, and sloughs. The minimum mapping width is typically 10 feet; however, if small sections of a stand fell below the minimum width, the polygon was not split. </SPAN></P><P><SPAN>More information can be found in the project report, which is bundled with the vegetation map published for BIOS here: https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/2900_2999/ds2963.zip and the report is available for download separately at: https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=218048&inline</SPAN></P></DIV></DIV></DIV>
This map was created by the Geographical Information Center (GIC) of the North State Planning and Development Collective at California State University, Chico. It was prepared for publication in BIOS by the California Department of Fish and Wildlifes (CDFW) Vegetation Classification and Mapping Program (VegCAMP).
License: This work is licensed under Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). Using the citation standards recommended for BIOS datasets (https://www.wildlife.ca.gov/Data/BIOS/Citing-BIOS) satisfies the attribution requirements of this license.
Disclaimer : The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data.
Minimum mapping unit (MMU): Typically, the minimum mapping size is 0.25 acres. However, the photo interpreters use their best judgment to determine if a stand below 0.25 acre should be separately delineated. For example, a smaller polygon would be appropriate for any new visible occurrence of a non-native species of concern, such as Phragmites australis, Arundo donax, Carpobrotus edulis, Eucalyptus spp., and Lepidium latifolium.
Minimum mapping width: There are many long and narrow polygons within the Suisun Marsh study area, most of which are roads, ditches, levees, and sloughs. The minimum mapping width is typically 10 feet; however, if small sections of a stand fell below the minimum width, the polygon was not split.
Extent
| West | -122.137473 | East | -121.849138 |
| North | 38.251318 | South | 38.038234 |
| Maximum (zoomed in) | 1:5,000 |
| Minimum (zoomed out) | 1:150,000,000 |
License: This work is licensed under Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). Using the citation standards recommended for BIOS datasets (https://www.wildlife.ca.gov/Data/BIOS/Citing-BIOS) satisfies the attribution requirements of this license.
Disclaimer : The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data.
Minimum mapping unit (MMU): Typically, the minimum mapping size is 0.25 acres. However, the photo interpreters use their best judgment to determine if a stand below 0.25 acre should be separately delineated. For example, a smaller polygon would be appropriate for any new visible occurrence of a non-native species of concern, such as Phragmites australis, Arundo donax, Carpobrotus edulis, Eucalyptus spp., and Lepidium latifolium.
Minimum mapping width: There are many long and narrow polygons within the Suisun Marsh study area, most of which are roads, ditches, levees, and sloughs. The minimum mapping width is typically 10 feet; however, if small sections of a stand fell below the minimum width, the polygon was not split.