Layers:

Layer: Snow_Survey_Web_Data (0)


Name: Snow_Survey_Web_Data

Display Field: SURVEY

Type: Feature Layer

Geometry Type: esriGeometryPoint

Has Views: true

Source Schema Changes Allowed: true

Description: This dataset contains the snow survey information needed for the River Flow Advisory Council Snow Survey dynamic web page. The spatial location has no meaning.

Copyright Text: Maine Geological Survey

Min. Scale: 0

Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: 438649.991227
YMin: 4905649.901887
XMax: 438650.008773
YMax: 4905650.098113
Spatial Reference: 26919 (26919)


Drawing Info:

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HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: OBJECTID

Unique ID Field:

Name : OBJECTID

IsSystemMaintained : True


Global ID Field:

Type ID Field:

Fields:
• OBJECTID (type: esriFieldTypeOID, alias: OBJECTID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• SURVEY (type: esriFieldTypeString, alias: SURVEY, SQL Type: sqlTypeOther, length: 25, nullable: true, editable: true)
• SURVEY_YEAR (type: esriFieldTypeInteger, alias: SURVEY_YEAR, SQL Type: sqlTypeOther, nullable: true, editable: true)
• SURVEY_DATE_START (type: esriFieldTypeDate, alias: SURVEY_DATE_START, SQL Type: sqlTypeOther, length: 8, nullable: true, editable: true)
• SURVEY_DATE_START_INT (type: esriFieldTypeInteger, alias: SURVEY_DATE_START_INT, SQL Type: sqlTypeOther, nullable: true, editable: true)
• DATE_START (type: esriFieldTypeString, alias: DATE_START, SQL Type: sqlTypeOther, length: 53, nullable: true, editable: true)
• SURVEY_DATE_END (type: esriFieldTypeDate, alias: SURVEY_DATE_END, SQL Type: sqlTypeOther, length: 8, nullable: true, editable: true)
• SURVEY_DATE_END_INT (type: esriFieldTypeInteger, alias: SURVEY_DATE_END_INT, SQL Type: sqlTypeOther, nullable: true, editable: true)
• DATE_END (type: esriFieldTypeString, alias: DATE_END, SQL Type: sqlTypeOther, length: 53, nullable: true, editable: true)
• STATUS (type: esriFieldTypeString, alias: STATUS, SQL Type: sqlTypeOther, length: 25, nullable: true, editable: true)
• COMMENTS (type: esriFieldTypeString, alias: COMMENTS, SQL Type: sqlTypeOther, length: 1500, nullable: true, editable: true)
• MGS_Key (type: esriFieldTypeString, alias: MGS_Key, SQL Type: sqlTypeOther, length: 20, nullable: true, editable: true)

Templates:

Name: Snow_Survey_Web_Data
Description:
Drawing Tool: esriFeatureEditToolPoint
Prototype:

Attributes:


Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 1/23/2026 1:17:13 PM

Schema Last Edit Date: 11/24/2025 3:24:59 PM

Data Last Edit Date: 1/23/2026 1:17:13 PM

Layer: Snow_Survey_Files (1)


Name: Snow_Survey_Files

Display Field: FILENAME

Type: Feature Layer

Geometry Type: esriGeometryPoint

Has Views: true

Source Schema Changes Allowed: true

Description: This dataset holds the files generated by the Maine Geological Survey Snow Survey program. There are map output JPEGs for snowpack depth, snowpack density, snowpack water content, snowpack water content change, historical snowpack water content, mean hydrologic basin water content and an ASCII text file with the measurements for each site across the state. Snow depth, density and water content measurements are collected around the state at scheduled times each winter. MGS compiles the data and produces statewide maps for the Maine River Flow Advisory Committee. The maps assist with spring flood risk assessment and monitoring.

Copyright Text: Maine Geological Survey, United States Geological Survey

Min. Scale: 0

Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: 438649.991227
YMin: 4905649.901887
XMax: 438650.008773
YMax: 4905650.098113
Spatial Reference: 26919 (26919)


Drawing Info:

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HasZ: false

HasM: false

Has Attachments: true

Has Geometry Properties: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: OBJECTID

Unique ID Field:

Name : OBJECTID

IsSystemMaintained : True


Global ID Field:

Type ID Field:

Fields:
• OBJECTID (type: esriFieldTypeOID, alias: OBJECTID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• SURVEY (type: esriFieldTypeString, alias: SURVEY, SQL Type: sqlTypeOther, length: 25, nullable: true, editable: true)
• DATAFILE (type: esriFieldTypeString, alias: DATAFILE, SQL Type: sqlTypeOther, length: 25, nullable: true, editable: true)
• FILENAME (type: esriFieldTypeString, alias: FILENAME, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
• DATAFILE_NAME (type: esriFieldTypeString, alias: DATAFILE_NAME, SQL Type: sqlTypeOther, length: 100, nullable: true, editable: true)
• DATAFILE_DESCRIPTION (type: esriFieldTypeString, alias: DATAFILE_DESCRIPTION, SQL Type: sqlTypeOther, length: 500, nullable: true, editable: true)
• DATAFILE_ORDER (type: esriFieldTypeSmallInteger, alias: DATAFILE_ORDER, SQL Type: sqlTypeOther, nullable: true, editable: true)
• ATTACH_OID (type: esriFieldTypeInteger, alias: ATTACH_OID, SQL Type: sqlTypeOther, nullable: true, editable: true)
• MGS_Key (type: esriFieldTypeString, alias: MGS_Key, SQL Type: sqlTypeOther, length: 20, nullable: true, editable: true)

Templates:

Name: Snow_Survey_Files
Description:
Drawing Tool: esriFeatureEditToolPoint
Prototype:

Attributes:


Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 1/23/2026 1:16:57 PM

Schema Last Edit Date: 1/9/2026 10:00:12 PM

Data Last Edit Date: 1/23/2026 1:16:57 PM

Layer: Snow_Survey_Data (2)


Name: Snow_Survey_Data

Display Field: SITE_NAME

Type: Feature Layer

Geometry Type: esriGeometryPoint

Has Views: true

Source Schema Changes Allowed: true

Description: The Maine Geological Survey and the USGS coordinate the colletction of snow measurements each winter for the Maine River Flow Advisory Commission's flood prediction report. These measurements are sent to MGS monthly in January and February and weekly in March, April and May as long as there is snow on the ground. The dataset contains all the raw snow survey measurements (depth, water content, density), their locations, data quality and other qualitative comments or observations. These measurements are used to create the snow survey statewide maps.

Copyright Text: Maine Geological Survey

Min. Scale: 4622324.434309

Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: 228730.096625398
YMin: 4739545.75870908
XMax: 809060.908381218
YMax: 5374600.959
Spatial Reference: 26919 (26919)


Drawing Info:

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HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: OBJECTID

Unique ID Field:

Name : OBJECTID

IsSystemMaintained : True


Global ID Field:

Type ID Field:

Fields:
• OBJECTID (type: esriFieldTypeOID, alias: OBJECTID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• SITE_ID (type: esriFieldTypeInteger, alias: SITE_ID, SQL Type: sqlTypeOther, nullable: false, editable: true)
• SITE_NAME (type: esriFieldTypeString, alias: SITE_NAME, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
• MOVED_TO_SITE_ID (type: esriFieldTypeInteger, alias: MOVED_TO_SITE_ID, SQL Type: sqlTypeOther, nullable: true, editable: true)
• SURVEY (type: esriFieldTypeString, alias: SURVEY, SQL Type: sqlTypeOther, length: 25, nullable: true, editable: true)
• SURVEY_YEAR (type: esriFieldTypeInteger, alias: SURVEY_YEAR, SQL Type: sqlTypeOther, nullable: true, editable: true)
• SURVEY_DATE (type: esriFieldTypeDate, alias: SURVEY_DATE, SQL Type: sqlTypeOther, length: 8, nullable: true, editable: true)
• SURVEY_DATE_TEXT (type: esriFieldTypeString, alias: SURVEY_DATE_TEXT, SQL Type: sqlTypeOther, length: 25, nullable: true, editable: true)
• DEPTH (type: esriFieldTypeDouble, alias: DEPTH, SQL Type: sqlTypeOther, nullable: true, editable: true)
• WATER (type: esriFieldTypeDouble, alias: WATER, SQL Type: sqlTypeOther, nullable: true, editable: true)
• DENSITY (type: esriFieldTypeDouble, alias: DENSITY, SQL Type: sqlTypeOther, nullable: true, editable: true)
• CONFIDENCE_LEVEL (type: esriFieldTypeString, alias: CONFIDENCE_LEVEL, SQL Type: sqlTypeOther, length: 25, nullable: true, editable: true)
• SOURCE (type: esriFieldTypeString, alias: SOURCE, SQL Type: sqlTypeOther, length: 100, nullable: true, editable: true)
• COMMENT (type: esriFieldTypeString, alias: COMMENT, SQL Type: sqlTypeOther, length: 255, nullable: true, editable: true)
• ERROR (type: esriFieldTypeString, alias: ERROR, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
• TRACE (type: esriFieldTypeString, alias: TRACE, SQL Type: sqlTypeOther, length: 5, nullable: true, editable: true)
• LATITUDE (type: esriFieldTypeDouble, alias: LATITUDE, SQL Type: sqlTypeOther, nullable: true, editable: true)
• LONGITUDE (type: esriFieldTypeDouble, alias: LONGITUDE, SQL Type: sqlTypeOther, nullable: true, editable: true)
• MGS_Key (type: esriFieldTypeString, alias: MGS_Key, SQL Type: sqlTypeOther, length: 20, nullable: true, editable: true)

Templates:

Name: Snow_Survey_Data
Description:
Drawing Tool: esriFeatureEditToolPoint
Prototype:

Attributes:

• SITE_ID: 0

Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 1/23/2026 1:17:27 PM

Schema Last Edit Date: 1/7/2026 7:36:26 PM

Data Last Edit Date: 1/23/2026 1:17:27 PM

Layer: Snow_Survey_Graph_Data (3)


Name: Snow_Survey_Graph_Data

Display Field: SITE_NAME

Type: Feature Layer

Geometry Type: esriGeometryPoint

Has Views: true

Source Schema Changes Allowed: true

Description: The Maine Geological Survey and the USGS coordinate the colletction of snow measurements each winter for the Maine River Flow Advisory Commission's flood prediction report. These measurements are sent to MGS monthly in January and February and weekly in March, April and May as long as there is snow on the ground. The dataset contains all the raw snow survey measurements (depth, water content, density), their locations, data quality and other qualitative comments or observations. These measurements are used to create the snow survey site summary graphs. These graphs show the water content measurements by defined date range for the current year and the complete historical mean, minimum, maximum, and percentiles

Copyright Text: Maine Geological Survey

Min. Scale: 0

Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: 228730.096625398
YMin: 4739545.75870908
XMax: 809060.908381218
YMax: 5374600.959
Spatial Reference: 26919 (26919)


Drawing Info:

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HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: OBJECTID

Unique ID Field:

Name : OBJECTID

IsSystemMaintained : True


Global ID Field:

Type ID Field:

Fields:
• OBJECTID (type: esriFieldTypeOID, alias: OBJECTID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• SITE_ID (type: esriFieldTypeInteger, alias: SITE_ID, SQL Type: sqlTypeOther, nullable: true, editable: true)
• SITE_NAME (type: esriFieldTypeString, alias: SITE_NAME, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
• WeekGroup (type: esriFieldTypeString, alias: WeekGroup, SQL Type: sqlTypeOther, length: 2, nullable: true, editable: true)
• SITE_WEEK (type: esriFieldTypeString, alias: SITE_WEEK, SQL Type: sqlTypeOther, length: 13, nullable: true, editable: true)
• MonthDayStart (type: esriFieldTypeString, alias: MonthDayStart, SQL Type: sqlTypeOther, length: 15, nullable: true, editable: true)
• MonthDayEnd (type: esriFieldTypeString, alias: MonthDayEnd, SQL Type: sqlTypeOther, length: 15, nullable: true, editable: true)
• CY_MEASUREMENTS (type: esriFieldTypeInteger, alias: CY_MEASUREMENTS, SQL Type: sqlTypeOther, nullable: true, editable: true)
• CY_WATER_MEAN (type: esriFieldTypeDouble, alias: CY_WATER_MEAN, SQL Type: sqlTypeOther, nullable: true, editable: true)
• COUNT_YEARS (type: esriFieldTypeInteger, alias: COUNT_YEARS, SQL Type: sqlTypeOther, nullable: true, editable: true)
• WATER_MEAN (type: esriFieldTypeDouble, alias: WATER_MEAN, SQL Type: sqlTypeOther, nullable: true, editable: true)
• WATER_MIN (type: esriFieldTypeDouble, alias: WATER_MIN, SQL Type: sqlTypeOther, nullable: true, editable: true)
• WATER_MAX (type: esriFieldTypeDouble, alias: WATER_MAX, SQL Type: sqlTypeOther, nullable: true, editable: true)
• p10 (type: esriFieldTypeDouble, alias: p10, SQL Type: sqlTypeOther, nullable: true, editable: true)
• p25 (type: esriFieldTypeDouble, alias: p25, SQL Type: sqlTypeOther, nullable: true, editable: true)
• p50 (type: esriFieldTypeDouble, alias: p50, SQL Type: sqlTypeOther, nullable: true, editable: true)
• p75 (type: esriFieldTypeDouble, alias: p75, SQL Type: sqlTypeOther, nullable: true, editable: true)
• p90 (type: esriFieldTypeDouble, alias: p90, SQL Type: sqlTypeOther, nullable: true, editable: true)
• MIN_YEAR (type: esriFieldTypeInteger, alias: MIN_YEAR, SQL Type: sqlTypeOther, nullable: true, editable: true)
• MAX_YEAR (type: esriFieldTypeInteger, alias: MAX_YEAR, SQL Type: sqlTypeOther, nullable: true, editable: true)
• MGS_Key (type: esriFieldTypeString, alias: MGS_Key, SQL Type: sqlTypeOther, length: 20, nullable: true, editable: true)

Templates:

Name: Snow_Survey_Graph_Data
Description:
Drawing Tool: esriFeatureEditToolPoint
Prototype:

Attributes:


Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 1/23/2026 1:17:37 PM

Schema Last Edit Date: 1/12/2026 4:15:12 AM

Data Last Edit Date: 1/23/2026 1:17:37 PM