Name: PortneufMarshCreekAquifer

Display Field: Name

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: This boundary of the Portneuf/Marsh Creek aquifer was updated by IDWR to support ongoing work with the Portneuf River Basin hydrologic study. The boundary was manually delineated through an analysis of geological maps, well completion reports, and topographic data. The primary geological units that comprise the aquifer include basalt flows and alluvial deposits within the valley, while sedimentary and carbonate formations associated with the Basin and Range extension form the underlying bedrock and surrounding mountain ranges. Utilizing data from the 2012 Geologic Map of Idaho (IGS Map 9), the aquifer's extent was initially outlined by compiling identified water-bearing units.Well completion reports were examined across the study area to validate the consistency between subsurface hydrostratigraphy and surface geological units depicted in geological maps. Generally, water-producing strata described in well reports correlated with the mapped geological formations. In regions where surface geology was characterized by loess deposits, well reports provided supplementary data to refine aquifer boundary delineations.The interaction between primary water-bearing units and adjacent bedrock formations remains incompletely understood. Therefore, the delineated aquifer boundary encompasses areas where primary aquifer materials are confirmed, particularly where active wells exist. Notably, certain regions, such as those south of Lava Hot Springs and north of Inkom, feature numerous domestic wells completed in bedrock formations, suggesting they are outside the main valley aquifer system.In areas with limited well data, topographic features served as the primary criteria for boundary determination. In narrow valleys, an elevation contour approximately 200 feet above the valley floor delineated the aquifer's edge. Between Bancroft and Grace, the topographic divide defines the boundary, though additional groundwater level data is required to precisely locate the groundwater divide in this segment.

Service Item Id: dd5506f937a14f9f8bc5422f5ddd4dc2

Copyright Text: Idaho Department of Water Resources

Default Visibility: true

MaxRecordCount: 2000

MaxSelectionCount: 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: 2632527.4744999995
YMin: 1239390.3430000003
XMax: 2687233.3211000003
YMax: 1321439.2631
Spatial Reference: 102605  (8826)  LatestVCSWkid(0)

Drawing Info:

Renderer:
Simple Renderer:
Symbol:
Style: esriSFSSolid
Color: [228, 252, 194, 255]
Outline:
Style: esriSLSSolid
Color: [110, 110, 110, 255]
Width: 0
Label: N/A
Description: N/A
Transparency: 0
Labeling Info:

Feature Draw Order:

N/A

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:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• Shape_Leng ( type: esriFieldTypeDouble, alias: Shape_Leng )
• Name ( type: esriFieldTypeString, alias: Name, length: 50 )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• 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