FGDL Documentation

FLORIDA GEOGRAPHIC DATA LIBRARY DOCUMENTATION

TITLE: ST. JOHNS WATER MANAGEMENT DISTRICT SPRINGS AND SEEPS - JANUARY 2014

Geodataset Name:       SPRINGS_SJRWMD_JAN14
Geodataset Type:       SHAPEFILE
Geodataset Feature:    Point
Feature Count:         200

GENERAL 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. This is an update to the springs_sjrwmd_2010 layer.

DATA SOURCE(S):                    St. Johns River Water Management District
SCALE OF ORIGINAL SOURCE MAPS:     Unknown
GEODATASET EXTENT:                 State of Florida

PUBLICATION DATE:                  20140128
TIME PERIOD OF CONTENT:            20140128
DOWNLOAD LINK:                     http://www.fgdl.org/metadataexplorer/explorer.jsp

FEATURE ATTRIBUTE TABLES:

Datafile Name: SPRINGS_SJRWMD_JAN14.DBF

ITEM NAME	WIDTH	TYPE
OBJECTID	4	OID
SHAPE	4	Geometry
STN_ID	8	Double
STN_NM	35	String
LAT_NO	8	Double
LONG_NO	8	Double
SRCE_ID	8	Double
STN_STTS_C	8	Double
SRCE_OFFCL	40	String
CNTY_ID	8	Double
PNT_LOC_DS	145	String
DIV_ID	8	Double
STN_CTGRY_	8	Double
STN_CTGRY	10	String
HISTORICAL	1	String
SPRING_MAG	1	String
SPRING_M_1	10	String
COUNTY	10	String
MGRS	15	String
DESCRIPT	35	String
FGDLAQDATE	36	Date
AUTOID	4	Integer

FEATURE ATTRIBUTE TABLES CODES AND VALUES:

Item
Item Description

OBJECTID Internal feature number.

SHAPE Feature geometry.

STN_ID A unique feature identifier (numeric) in the SJRWMD's Oracle table, Station Header.

STN_NM Unique official name (text) of the spring.

LAT_NO Decimal Degree Location of Latitude.

LONG_NO Decimal Degree Location of Longitude.

SRCE_ID No definition available.

STN_STTS_C No definition available.

SRCE_OFFCL Source Official Name of the Aquifer that is the source of the spring.

CNTY_ID County ID code.

PNT_LOC_DS Point Location Description. Not unique, not the official name of the spring, this is additional information on the spring/seep entity's location.

DIV_ID No definition available.

STN_CTGRY_ No definition available.

STN_CTGRY Whether it is a Spring or Seep.

HISTORICAL Historical Spring Magnitude- Pre-2003 median spring magnitude of all discharge measurements.

SPRING_MAG Magnitude of the spring - it's a value from 1-8, representing median of all discharge measurements for spring.

SPRING_M_1 Spring Magnitude Date- MM/DD/YYYY of last measurement used for the Magnitude median calculation.

COUNTY The county in which the spring/seep is located.

MGRS Military Grid Reference System (MGRS) Coordinate of the Facility. The MGRS is the geocoordinate standard used by NATO militaries for locating points on the earth. The MGRS provides a means to represent any location on the surface of the Earth using an alphanumeric string. Hierarchical references are based on the Universal Transverse Mercator (UTM) coordinate system. The MGRS is used for the entire earth. http://mgrs-data.org/

DESCRIPT Based on STN_NM

FGDLAQDATE The date FGDL acquired the data from the source.

AUTOID Unique ID added by GeoPlan

USER NOTES:

This data is provided 'as is'. GeoPlan relied on the integrity of the original data layer's topology

This data is provided 'as is' by GeoPlan and is complete to our knowledge.

GeoPlan relied on the integrity of the attribute information within the original data.

Florida is divided into five water management districts to preserve and manage Florida's precious water resources. The St. Johns River Water Management Florida is divided into five water management districts to preserve and manage Florida's precious water resources. The St. Johns River Water Management District is responsible for managing groundwater and surface water resources in all or part of 18 counties in northeast and east-central Florida. District staff work from service centers in Palatka, Jacksonville, Altamonte Springs and Palm Bay Spring Magnitude Discharge 1 100 cfs or more 2 10 to 100 cfs 3 1 to 10 cfs 4 0.223 cfs (100 gpm) to 1 cfs 5 0.0223 cfs (10 gpm) to 0.223 cfs 6 0.0022 cfs (1 gpm) to 0.0223 cfs 7 0.00028 cfs (1 pint/min) to 0.0022 cfs 8 0.00028 cfs or less Units: cfs = cubic feet per second gpm = gallons per minute pint/min = pints per minute Conversions: 100 cfs = 64.6 million gallons per day 1 cfs = 646,316.9 gallons per day 1 gallons per minute = 0.0022 cfs 1 pint per minute = 0.00028 cfs Internal SJRWMD NOTE: Springs and seeps locations are derived from lat/longs stored in the Station Header table within the Oracle database. Individual representatives of a spring's group (for example, the many springs that make up the Silver Springs group) are each represented by a point, rather than a single point per group. Any specific questions about the data in this view should be directed to the person who originally created the station in Station Header, listed with the 'Created By' field when doing a station search in the Station Header web app (http://dasprod/station/).

Created from SDE feature view of Spring & Seep stations from Station Header on PROD. Request from SJRWMD's Groundwater Programs Division (Jill Stokes) to create this GIS view of current spring/seep stations. The District uses this information for general mapping and cartographic purposes, and for small and medium scale hydrologic and assessment applications.

This data is provided 'as is' and its horizontal positional accuracy has not been verified by GeoPlan

This data is provided 'as is' and its vertical positional accuracy has not been verified by GeoPlan

The St. Johns River Water Management District prepares and uses information for its own purposes and this information may not be suitable for other purposes. This information is provided "as is". Further documentation of this data can be obtained by contacting: St. Johns River Water Management District, Department of Resource Management, Groundwater Programs Division. See Metadata Reference Section of this document for additional contact information.

The Florida Geographic Data Library is a collection of Geospatial Data compiled by the University of Florida GeoPlan Center with support from the Florida Department of Transportation. GIS data available in FGDL is collected from various state, federal, and other agencies (data sources) who are data stewards, producers, or publishers. The data available in FGDL may not be the most current version of the data offered by the data source. University of Florida GeoPlan Center makes no guarantees about the currentness of the data and suggests that data users check with the data source to see if more recent versions of the data exist. Furthermore, the GIS data available in the FGDL are provided 'as is'. The University of Florida GeoPlan Center makes no warranties, guaranties or representations as to the truth, accuracy or completeness of the data provided by the data sources. The University of Florida GeoPlan Center makes no representations or warranties about the quality or suitability of the materials, either expressly or implied, including but not limited to any implied warranties of merchantability, fitness for a particular purpose, or non-infringement. The University of Florida GeoPlan Center shall not be liable for any damages suffered as a result of using, modifying, contributing or distributing the materials. A note about data scale: Scale is an important factor in data usage. Certain scale datasets are not suitable for some project, analysis, or modeling purposes. Please be sure you are using the best available data. 1:24000 scale datasets are recommended for projects that are at the county level. 1:24000 data should NOT be used for high accuracy base mapping such as property parcel boundaries. 1:100000 scale datasets are recommended for projects that are at the multi-county or regional level. 1:125000 scale datasets are recommended for projects that are at the regional or state level or larger. Vector datasets with no defined scale or accuracy should be considered suspect. Make sure you are familiar with your data before using it for projects or analysis. Every effort has been made to supply the user with data documentation. For additional information, see the References section and the Data Source Contact section of this documentation. For more information regarding scale and accuracy, see our webpage at: http://geoplan.ufl.edu/education.html

REFERENCES:

SJRWMD Website: http://www.sjrwmd.com/ SJRWMD Springs Characteristics: http://www.sjrwmd.com/springs/characteristics.html

DATA LINEAGE SUMMARY:

The dataset was downloaded from the SJRWMD website http://www.sjrwmd.com/gisdevelopment/docs/themes.html as springseep.zip in October 2016. When downloaded the data was in shapefile format and the coordinate system was NAD_1983_HARN_UTM_Zone_17N. The data was projected to GCS_North_American_1983_HARN. -Added DESCRIPT field, populated it based on STN_NM -Added FGDLAQDATE and populated it based on the date GeoPlan received the data -Added MGRS field and calculated it using coordinate notation tool -Added COUNTY field, used county boundaries layer to spatially join and populate COUNTY field -Restructured table -Uppercased all fields -Renamed data from springseep to springs_sjrwmd_jan14 Process Date: 20161116

MAP PROJECTION PARAMETERS:

Projection                          ALBERS
Datum                               HPGN
Units                               METERS
Spheroid                            GRS1980
1st Standard Parallel               24  0  0.000
2nd Standard Parallel               31 30  0.000
Central Meridian                   -84 00  0.000
Latitude of Projection's Origin     24  0  0.000
False Easting (meters)              400000.00000
False Northing (meters)             0.00000

DATA SOURCE CONTACT (S):

Name:
Abbr. Name:
Address:


Phone:

Web site:
E-mail:
Contact Person:
         Phone:
        E-mail:

St. Johns River Water Management District
SJRWMD
PO Box 1429
Palatka, FL
32178-1429
386.329.4336


http://www.sjrwmd.com/gisdevelopment/docs/themes.html
gwpsupport@sjrwmd.com
Jill A. Stokes

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Name:                   FLORIDA GEOGRAPHIC DATA LIBRARY
Abbr. Name:             FGDL
Address:                Florida Geographic Data Library
                        431 Architecture Building
                        PO Box 115706
                        Gainesville, FL  32611-5706
Web site:               http://www.fgdl.org

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