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The spatial features consist primarily of stream line segments exported from the \u201cQ:\\GIS_Data\\DPW_GIS_Restricted\\Streams_DPW_Master.mdb\\Streams_MCDPW\u201d feature class. Other other spatial features were exported from: \u201c<\/SPAN><\/SPAN>P:\\Flood-Control\\Maintenance\\RMA\\East Marin RMA\\Maps\\Shapefiles\\ RMA_Sites.shp\u201d,<\/SPAN><\/SPAN>\u201cQ:\\GIS_Data\\DPW_GIS_Restricted\\FCWCD_Facilities_Master.mdb\\Levees\u201d feature class, <\/SPAN><\/SPAN>and \u201cP:\\Flood-Control\\Maintenance\\RMA\\East Marin RMA\\Maps\\Shapefiles\\Fuel_Reduction.shp\u201d as needed to delineate features not along stream features.<\/SPAN><\/SPAN><\/P>

The exported line segments were edited (trimmed, merged, etc.) to match the extent of RMA activities at a site, and split into segments to correspond with the RMA Sites as shown on the maps in the directory \u201c<\/SPAN>P:\\Flood-Control\\Maintenance\\RMA\\East Marin RMA\\Maps\\Final_RMA_Maps\\\u201d .<\/SPAN><\/SPAN><\/P>

Most of the attributes inherited from the <\/SPAN><\/SPAN>Streams_MCDPW feature class were deleted, but \u201cALIAS\u201d (alternate feature names) and \u201cLength\u201d (feature length in feet) were retained.<\/SPAN><\/SPAN>Attributes were added to identify Flood Control Zone (\u201cFCZ\u201d), stream or other feature name (\u201cNAME\u201d), RMA Site ID (\u201cSiteName\u201d). Other attributes (YES/NO fields) were added to identify what activities occur at the site (\u201cVegetation Maintenance \u201cSediment Removal\u201d, \u201cErosion\u201d, \u201cPump Station\u201d, \u201cTide Gate\u201d, \u201cLevee Maintenance\u201d, \u201cFuels Reduction\u201d, \u201cCattail Cutting\u201d). Note that the Fuels Reduction activity is not part of the SMP but is a maintenance activity required for fire safety.<\/SPAN><\/P>

The layer \u201cRMA_Sites.shp\u201d was used as as a source of values for the <\/SPAN><\/SPAN>\u201cNAME\u201d, and \u201cSiteName\u201d attributes. The spreadsheets \u201c<\/SPAN><\/SPAN>RMA_DFG_List.xlsx\u201d and \u201cAppA_RMA_ProjectAreas_Sites_201206_Update.xlsx\u201d (in directory P:\\Flood-Control\\Maintenance\\RMA\\East Marin RMA\\Spreadsheets for Activities\\) were used as references to the project sites and as a source of the activities values. The maps and the \u201cAppA_RMA_\u201d spreadsheet listed above were also used to identify <\/SPAN><\/SPAN>\u201cFuels Reduction\u201d and \u201cCattail Cutting\u201c activities separately from \u201cVegetation Maintenance\u201d listed on the \u201c<\/SPAN><\/SPAN>RMA_DFG_List.xlsx\u201d spreadsheet<\/SPAN><\/SPAN>. <\/SPAN><\/SPAN>EL 06/2012<\/SPAN><\/P>

The data were updated in 2019 to indicate which segments have vegetation maintenance performed by Conservation Corps North Bay (CCNB) crews under direction from the Marin County Flood Control and Water Conservation District. The maintenance frequency is indicated in the field \"VegFrequency\". Frequency of activities other than vegetation maintenance is not indicated. Attributes for SMP Site names and CCNB reaches labeled on the map set produced for the CCNB crews were also added to the dataset. Note that this is a draft data layer, and the specific activities listed and the Maintenance Responsibility assigned for the current spatial extents of the segments may not be accurate and need verification and refinement. EL 11/04/20 <\/SPAN><\/P>

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The location and boundaries of Easements and other Real Estate Property Agreements are represented by polygons created by the Flood Control District based on maps and legal descriptions in Real Estate documents (deeds, other recorded documents, and other District property agreements), Assessor\u2019s Parcel Maps, Record of Survey maps and other official maps, and from hand drawn features in hard-copy District Creek Books. Features are drawn to align with Parcel boundaries from the County of Marin GIS Parcel dataset, and are representational only. Data are not survey precise. Horizontal Positional Accuracy varies from + /- 5 feet up to +/- 50 feet. The attribute \u201cAgreementID\" in the GIS layer corresponds to the field \u201cID\u201d in associated Access database table records that include document numbers, map references, and a summary of other information about each agreement. 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