Name: SJRWMD Springs

Display Field: STN_NM

Type: Feature Layer

Geometry Type: esriGeometryPoint

Description: A spring is defined as a place where groundwater flows naturally onto the land surface or into a body of surface water. A spring's occurrence depends on the nature and relationships among topography, underlying geologic strata, and aquifer water levels. While some springs are isolated features, many are clustered into spring groups of varying size and areal extent. In addition to providing a unique recreational resource, springs provide important base flow to rivers and streams and critical habitat to plants and animals. Most springs in SJRWMD occur in discharge areas of the Upper Floridan aquifer where limestone is at or near land surface, or where the sediments overlying Floridan limestone have been breached. The majority of the springs in SJRWMD are located along the major river systems of the St. Johns, Ocklawaha, and Wekiva rivers. This data layer also includes surficial aquifer springs, which are now called seeps, under nomenclature recently agreed upon by the Florida Geological Survey. Springs are classified by magnitude based on the volume of flow, or discharge of water. The amount of water that flows from a spring depends on several factors, including rainfall, size of the caverns within the rocks, the water pressure in the aquifer, and the size of spring recharge basin. Human activities can also influence the volume of water that discharges from a spring; for example, increased groundwater withdrawals can reduce the hydraulic pressure in an aquifer, causing water levels to decline and spring flows to decrease. Since springs have dynamic flows dependent on climate, hydrogeology, and others factors, a spring classified as being a certain magnitude at one time may not continue to flow at that rate at other times. Springs are classified by magnitude, which is based on the median value of all discharge measurements for the period of record. First magnitude springs discharge the greatest amount of water. The following is a summary of spring classification magnitude by discharge.

Copyright Text:

Default Visibility: false

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 250000

Max Scale: 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: 473439.47410000104
YMin: 410364.836
XMax: 718651.6468
YMax: 716250.8462
Spatial Reference: 3087  (3087)

Drawing Info:

Renderer:
Simple Renderer:
Symbol:
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

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• STN_ID ( type: esriFieldTypeInteger, alias: STN_ID )
• STN_NM ( type: esriFieldTypeString, alias: STN_NM, length: 32 )
• LAT_NO ( type: esriFieldTypeDouble, alias: LAT_NO )
• LONG_NO ( type: esriFieldTypeDouble, alias: LONG_NO )
• SRCE_ID ( type: esriFieldTypeInteger, alias: SRCE_ID )
• STN_STTS_C ( type: esriFieldTypeSmallInteger, alias: STN_STTS_C )
• SRCE_OFFCL ( type: esriFieldTypeString, alias: SRCE_OFFCL, length: 37 )
• CNTY_ID ( type: esriFieldTypeSmallInteger, alias: CNTY_ID )
• PNT_LOC_DS ( type: esriFieldTypeString, alias: PNT_LOC_DS, length: 189 )
• STN_CTGRY_ ( type: esriFieldTypeSmallInteger, alias: STN_CTGRY_ )
• STN_CTGRY ( type: esriFieldTypeString, alias: STN_CTGRY, length: 7 )
• HISTORICAL ( type: esriFieldTypeString, alias: HISTORICAL, length: 1 )
• SPRING_MAG ( type: esriFieldTypeString, alias: SPRING_MAG, length: 1 )
• SPRING_M_1 ( type: esriFieldTypeString, alias: SPRING_M_1, length: 10 )
• MGRS ( type: esriFieldTypeString, alias: MGRS, length: 15 )
• DESCRIPT ( type: esriFieldTypeString, alias: DESCRIPT, length: 100 )
• FGDLAQDATE ( type: esriFieldTypeDate, alias: FGDLAQDATE, length: 8 )
• AUTOID ( type: esriFieldTypeInteger, alias: AUTOID )
• SHAPE ( type: esriFieldTypeGeometry, alias: SHAPE )
• DIV_ID ( type: esriFieldTypeSmallInteger, alias: DIV_ID )
• GOOGLEMAP ( type: esriFieldTypeString, alias: GOOGLEMAP, length: 100 )
• LAT_DD ( type: esriFieldTypeDouble, alias: LAT_DD )
• LONG_DD ( type: esriFieldTypeDouble, alias: LONG_DD )

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

  Iteminfo   Thumbnail   Metadata