Name: MARIN_HYDROLOGY_FLOOD_RAINFALL_DEPTH_10YR_100YR

Display Field: Cell_ID

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: This layer provides rainfall depths in inches for the 10 and 100 recurrence interval over a range of durations from 15-minutes to 48-hours to be used when performing hydrological calculations within the unincorporated parts of Marin County, and possibly in incorporated areas where specifically approved by the City or Town. These values were statistically derived using precipitation gages across the entire San Francisco Bay Area by Met-Stat for Valley Water (2016) as an alternative to the values presented in NOAA Atlas 14. Analysis by Valley Water for the South Bay as well as by Wood Rodgers in 2025 for Marin County showed runoff from calibrated hydrologic models better matched historical flow frequencies using Met-Stat depths than NOAA Atlas 14 depths. Note that it is likely the Met Stat values will be replaced by the newer NOAA Atlas 15 values when publicly released in 2028 (estimated date by NOAA) per NOAA (https://water.noaa.gov/about/atlas15). Users of this data should always check the webpage for the latest information on updates to Marin County hydrology.

Service Item Id: 68c61cef4e1145b78cd5c3bb6aeb3a18

Copyright Text: Data provided courtesy of Valley Water for San Francisco Bay.

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0.0

Max Scale: 0.0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: 5831621.760086402
YMin: 2120037.659842968
XMax: 6008555.504957035
YMax: 2316920.422589034
Spatial Reference: 2872  (2872)  LatestVCSWkid(0)

Drawing Info:

Renderer:
Simple Renderer:
Symbol:
Style: esriSFSSolid
Color: [251, 207, 252, 255]
Outline:
Style: esriSLSSolid
Color: [110, 110, 110, 255]
Width: 0
Label: N/A
Description: N/A
Transparency: 0
Labeling Info:

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false
Supports Percentile Statistics: true
Supports Having Clause: true
Supports Count Distinct: true
Supports Time Relation: true
Supports Sql Format: false
Supports Query Analytic: true
Supports Query With Current User: true

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• Cell_ID ( type: esriFieldTypeString, alias: Cell_ID, length: 255 )
• Marin_010YR_15MIN ( type: esriFieldTypeDouble, alias: Marin_010YR_15MIN )
• Marin_010YR_30MIN ( type: esriFieldTypeDouble, alias: Marin_010YR_30MIN )
• Marin_010YR_1HR ( type: esriFieldTypeDouble, alias: Marin_010YR_1HR )
• Marin_010YR_2HR ( type: esriFieldTypeDouble, alias: Marin_010YR_2HR )
• Marin_010YR_3HR ( type: esriFieldTypeDouble, alias: Marin_010YR_3HR )
• Marin_010YR_6HR ( type: esriFieldTypeDouble, alias: Marin_010YR_6HR )
• Marin_010YR_12HR ( type: esriFieldTypeDouble, alias: Marin_010YR_12HR )
• Marin_010YR_24HR ( type: esriFieldTypeDouble, alias: Marin_010YR_24HR )
• Marin_010YR_48HR ( type: esriFieldTypeDouble, alias: Marin_010YR_48HR )
• Marin_100YR_15MIN ( type: esriFieldTypeDouble, alias: Marin_100YR_15MIN )
• Marin_100YR_30MIN ( type: esriFieldTypeDouble, alias: Marin_100YR_30MIN )
• Marin_100YR_1HR ( type: esriFieldTypeDouble, alias: Marin_100YR_1HR )
• Marin_100YR_2HR ( type: esriFieldTypeDouble, alias: Marin_100YR_2HR )
• Marin_100YR_3HR ( type: esriFieldTypeDouble, alias: Marin_100YR_3HR )
• Marin_100YR_6HR ( type: esriFieldTypeDouble, alias: Marin_100YR_6HR )
• Marin_100YR_12HR ( type: esriFieldTypeDouble, alias: Marin_100YR_12HR )
• Marin_100YR_24HR ( type: esriFieldTypeDouble, alias: Marin_100YR_24HR )
• Marin_100YR_48HR ( type: esriFieldTypeDouble, alias: Marin_100YR_48HR )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• GlobalID ( type: esriFieldTypeGlobalID, alias: GlobalID, length: 38 )
• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• Shape.STArea() ( type: esriFieldTypeDouble, alias: Shape.STArea() )
• Shape.STLength() ( type: esriFieldTypeDouble, alias: Shape.STLength() )

Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

  Iteminfo   Thumbnail   Metadata