Enhanced_WQ_locations 
Report Number : LOXA 06-001 
Frequently asked questions: 
What does this data set describe? 
1. How should this data set be cited?
2. What geographic area does the data set cover? 
3. What does it look like? 
4. Does the data set describe conditions during a particular time period?
5. What is the general form of this data set? 
6. How does the data set represent geographic features?
7. How does the data set describe geographic features?
Who produced the data set?
1. Who are the originators of the data set? 
2. Who also contributed to the data set? 
3. To whom should users address questions about the data?
Why was the data set created?
How was the data set created?
1. Where did the data come from? 
2. How were the data generated, processed, and modified?
3. What similar or related data should the user be aware of?
How reliable are the data; what problems remain in the data set?
1. How well have the observations been checked?
2. How accurate are the geographic locations?
3. How accurate are the heights or depths?
4. Where are the gaps in the data? What is missing? 
5. How consistent are the relationships among the data, including topology?
How can someone get a copy of the data set? 
1. Are there legal restrictions on access or use of the data?
2. Who distributes the data? 
3. What's the catalog number I need to order this data set? 
4. What legal disclaimers am I supposed to read? 
5. How can I download or order the data?
Who wrote the metadata?
What does this data set describe? 
Title: Enhanced_WQ_locations 
Abstract: 
Three existing monitoring networks (monthly compliance monitoring, monitoring at 
inflow and outflow structures, and 11 stations along two transects in the southwest) 
operated by the South Florida Water Management District (SFWMD) regularly monitor 
water quality within the Arthur R. Marshall Loxahatchee National Wildlife Refuge. The 
current marsh network is estimated to cover approximately 60% of the refuge, leaving 
40% of the marsh uncharacterized. The uncharacterized areas of greatest concern are 
those between the canals and existing stations and in the immediate vicinity of existing 
or proposed structures (STA-1E and STA-1W for example). 

The Enhanced Water Quality network focuses on these uncharacterized areas. Thirty 
of the new sample sites are located on six transects extending from the canal to 4 km 
into the interior. Nine additional new points are located in the northwest and southeast. 
Data collected at these stations include parameters consistent with the existing 
Everglades Protection Area (EVPA) sampling. Sampling began in June 2004. 
Supplemental Information: 
Locations of the Enhanced Water Quality sites were determined through analysis of 
past data from the existing marsh monitoring stations, topography, current conductivity 
sampling collected monthly by Refuge staff, and conductivity sampling conducted 
during February 2004 by SFWMD staff (Sue Newman), and other relevant studies 
(Childers et al. 2003; Richardson et al. 1990; Scheidt et al. 2000). Thirty of the new 
sample sites are located on six transects extending from the canal to 4 km into the 
interior. Nine additional new points are located in the northwest and southeast. The 
number and location of sample sites will be adaptively modified as data becomes 
available in order to reduce redundancy and maximize the value of the information 
collected. 
PVC pipe markers have been placed at each new sampling station and each new 
station was assigned an identification number that is consistent with other samples 
taken in the refuge. Sampling is conducted via helicopter and follows procedures 
defined in the South Florida Water Management Districts Water Quality Sampling 
protocol (SFWMD 2002). 
Positions for each of the sampling points were taken at the northernmost PVC pipe with 
a Trimble GeoExplorer 3. A minimum of 5 positions were recorded at 5 second 
intervals for each station. The Trimble automatically averages these readings to 
produce a single data point. The data were then post-processed in the lab to achieve 
differential positions for each station. Pathfinder Office v2.8 was used to download, 
correct for differential using the CORS Miami 3 station information, and export to an 
ESRI ARCGIS shape file. 
For more information about the Arthur R. Loxahatchee National Wildlife Refuge Work 
Plan, please refer to: Brandt, Laura A., 
Matt Harwell, Mike Waldon (March 29, 2004). "Work Plan: Water Quality Monitoring 
and Modeling for the A.R.M. Loxahatchee National Wildlife Refuge: 2004-2006, 
USFWS A copy of the Work Plan is 
posted on the USGS/SOFIA website for the enhanced monitoring information project at 
http://sofia.usgs.gov/lox_monitor_model/
For more information on other Water Quality structure coordinate information for the 
Refuge, please check out DBHYDRO: 
http://www.sfwmd.gov/org/ema/dbhydro/index.html 
References 
Childers, D. L., Doren, R. F., Jones, R., Noe, G. B., Rugge, M., and Scinto, L. J. (2003). 
"Decadal change in vegetation and soil phosphorus pattern across the Everglades 
landscape." Journal of Environmental Quality, 32(1), 344-362. 

Richardson, J. R., Bryant, W. L., Kitchens, W. M., Mattson, J. E., and Pope, K. R. 
(1990). "An evaluation of refuge habitats and relationships to water quality, quantity, 
and hydroperiod: A synthesis report." Florida Cooperative Fish and Wildlife Research 
Unit, Univ. of Florida, Gainesville. 
Scheidt, D., Stober, J., Jones, R., and Thornton, K. (2000). "South Florida Ecosystem 
Assessment: Everglades Water Management, Soil Loss, Eutrophication and Habitat." 
EPA 904-R-00-003, EPA. 
SFWMD. (2002). "Field Sampling Quality Manual." Water Quality Monitoring Division 
and Water Quality Analysis Division, South Florida Water Management District, West 
Palm Beach, FL. 
1. How should this data set be cited?
U.S. Fish and Wildlife Service, Arthur R. Marshall Loxahatchee National, Unpublished 
Material, Enahnced_WQ_locations: 1. 
2. What geographic area does the data set cover?
West Bounding Coordinate: -80.445337 
East Bounding Coordinate: -80.225852 
North Bounding Coordinate: 26.667392 
South Bounding Coordinate: 26.426753 
3. What does it look like?
Point Layer (shape file) of the Enhanced Water Quality sampling stations 
4. Does the data set describe conditions during a particular time period?
Beginning Date: August 10 2005 
Beginning Time: 08:00 am 
Ending Date: September 15, 2005 
Ending Time: 4:30 PM 
Currentness Reference: ground condition 
5. What is the general form of this data set?
Geospatial Data Presentation Form: vector digital data 
6. How does the data set represent geographic features?
a. How are geographic features stored in the data set?
This is a Vector data set. It contains the following vector data types (SDTS terminology): 
Entity point (39) 
b. What coordinate system is used to represent geographic features?
Horizontal positions are specified in geographic coordinates, that is, latitude and 
longitude. Latitudes are given to the nearest 0.000000. Longitudes are given to the 
nearest 0.000000. Latitude and longitude values are specified in Decimal degrees. 

The horizontal datum used is D WGS 1984.
The ellipsoid used is WGS 1984.
The semi-major axis of the ellipsoid used is 6378137.000000.
The flattening of the ellipsoid used is 1/298.257224.
7. How does the data set describe geographic features?
Enhanced_WQ_locations 
FID 
Internal feature number. (Source: ESRI) 
Frequency of measurement: As needed 
Sequential unique whole numbers that are automatically generated. 
Shape 
Feature geometry. (Source: ESRI) 
Name
Date
Time
Max_PDOP
Corr_Type
GPS_Date
GPS_Time
Feat_Name
Datafile
Unfilt_Pos
Filt_Pos
GPS_Height
Horz_Prec
Vert_Prec
Latitude
Longitude
Point_ID
Data_Dicti
X
Y
Who produced the data set? 
1. Who are the originators of the data set? (may include formal authors, digital 
compilers, and editors)
U.S. Fish and Wildlife Service, Arthur R. Marshall Loxahatchee National Wildlife Refuge 

2. Who also contributed to the data set?
Dr. Donatto Surratt, Ecologist: Leslie MacGregor, GIS Specialist; Robert V. Smith, 
Biologist; Kevin Maier, Fire Tech 
3. To whom should users address questions about the data?
Donatto Surratt, Ph.D. 
A.R.M. Loxahatchee National Wildlife Refuge
Ecologist
10216 Lee Rd.
Boynton Beach Rd., Florida 33437
USA
561-735-6003 (voice)
561-735-6008 (FAX)
Donatto_Surratt@fws.gov
Why was the data set created? 
The primary purpose of these data is to collect water quality data. The information collected 
during these studies will help resource managers identify potential threats to Refuge 
resources, keep unimpacted areas from becoming impacted, maximize the potential for the 
recovery of impacted areas, and better understand the hydrology and ecology of the 
Refuge. 
How was the data set created? 
1. Where did the data come from?
Positions for each of the sampling points were taken at the most Northern PVC pipe 
with a Trimble GeoExplorer 3. A minimum of 5 positions were recorded at 5 second 
intervals for each station. The data were then post-processed in the lab to achieve 
differential positions for each station. Pathfinder Office v2.8 was used to download, 
correct for differential using the CORS Miami 3 station information, and export to an 
ESRI ARCGIS shape file. 
2. What changes have been made?
No changes have been made as of 12 Dec 2005. 
Person who carried out this activity: 
Leslie MacGregor 
Everglades National Park
GIS Specialist
10216 Lee Rd.
Boynton Beach, Florida 33437

USA 
561-735-6002 (voice)
561-735-6002 (FAX)
Leslie_MacGregor@nps.gov
Hours of Service: 8:00am-4:30 pm 
3. What similar or related data should the user be aware of?
South Florida Water Management District, DBHYDRO. A source for other Water Quality 
structure coordinate information for the Refuge: 
<http://www.sfwmd.gov/org/ema/dbhydro/index.html> 
For information on A.R.M. Loxahatchee National Wildlife Refuge Enhanced Water 
Quality Monitoring and Modeling, check out SOFIA at: 
<http://sofia.usgs.gov/lox_monitor_model/> 
How reliable are the data; what problems remain in the data 
set? 
1. How well have the observations been checked?
Triple checked 
2. How accurate are the geographic locations?
The points were differentially corrected using the CORS Miami 3 station. The CORS 
system enables positioning accuracies that approach a few centimeters relative to the 
National Spatial Reference System, both horizontally and vertically. For more 
information, please see 
<http://www.ngs.noaa.gov/CORS/cors-data.html> 
3. How accurate are the heights or depths?
Not applicable 
4. Where are the gaps in the data? What is missing?
LOXA125 is not in the sequence of stations because this station does not exist. 
5. How consistent are the relationships among the observations, including 
Corrected positions are consistent with field observations and other GIS data. 
How can someone get a copy of the data set? 
Are there legal restrictions on access or use of the data? 
Access Constraints 

Anyone may use data at their own risk. However, the authority to modify the data 
belongs to the Arthur R. Marshall Loxahatchee National Wildlife Refuge. 
Use constraints 
GIS data disclaimer 
The Data is provided to as is, without warranty or any representation of accuracy, 
timeliness or completeness. The burden for determining accuracy, completeness, 
timeliness, merchantability and fitness for or the appropriateness for use rests 
solely on the user. The Arthur R. Marshall Loxahatchee National Wildlife Refuge 
makes no warranties, express or implied, as to the use of the data. There are no 
implied warranties of merchantability or fitness for a particular purpose. The user 
acknowledges and accepts the limitations of the Data, including the fact that the 
Data is dynamic and is in a constant state of maintenance, correction and update. 
1. Who distributes the data set? 
Leslie MacGregor
Everglades National Park
GIS Specialist
10216 Lee Rd.
Boynton Beach, Florida 33437
USA
561-735-6002 (voice)
561-735-6008 (FAX)
Leslie_MacGregor@nps.gov
2. What's the catalog number I need to order this data set?
To order this data file, please reference Enhanced_WQ_locations. Please specify either 
Excel or Shapefile. 
3. What legal disclaimers am I supposed to read?
GIS data disclaimer 
The Data is provided to as is, without warranty or any representation of accuracy, 
timeliness or completeness. The burden for determining accuracy, completeness, 
timeliness, merchantability and fitness for or the propriateness for use rests solely on the 
user. The Arthur R. Marshall Loxahatchee National Wildlife Refuge makes no warranties, 
express or implied, as to the use of the data. There are no implied warranties of 
merchantability or fitness for a particular purpose. The user acknowledges and accepts 
the limitations of the Data, including the fact that the Data is dynamic and is in a constant 
state of maintenance, correction and update. 
4. How can I download or order the data?
Availability in digital form: 
Dataformat: (version ARCGIS 8.3) 

Mediayoucanorder: CD-ROM 
Cost to order the data: NA 
Special instructions: 
Email or regular mail a request to Leslie MacGregor. Please see contact information. 
How long will it take to get the data? 
approximately 1 week 
5. Is there some other way to get the data?
Must submit a written request to either Leslie MacGregor via email or regular mail. ( 
Please see contact information) 
6. What hardware or software do I need in order to use the data set?
Must have ARCGIS 8.3 or later to open the shape files. Excel may be used to open the 
database file. 
Who wrote the metadata? 
Dates: 
Last modified: 12-Dec-2005 
Last Reviewed: 12-Dec-2005 
To be reviewed: update as appropriate 
Metadata author: 
Leslie MacGregor 
Everglades National Park 
GIS Specialist 
10216 Lee Rd. 
Boynton Beach Road, Florida 33437 
USA 
561-735-6002 (voice)
561-735-6008 (FAX)
Leslie_MacGregor@nps.gov
Metadata standard: 
FGDC Content Standards for 
Digital Geospatial Metadata 
(FGDC-STD-001-1998) 
Metadata extensions used: 
<http://www.esri.com/metadata/esriprof80.html> 

Name Date Time Latitude Longitude X_DMS* Y_DMS* X_DM** Y_DM** 
LOXA129 8/23/2005 11:52:39am 26.585007262 -80.266082555 80 15' 57.90" W 26 35' 6.03" N 80 15.965' W 26 35.1005' N 
LOXA132 8/23/2005 12:18:45pm 26.609005614 -80.291899387 80 17' 30.84" W 26 36' 32.42" N 80 17.514' W 26 36.5403333333333' N 
LOXA135 8/23/2005 12:25:30pm 26.623355381 -80.316122757 80 18' 58.04" W 26 37' 24.08" N 80 18.967333' W 26 37.4013333333333' N 
LOXA104 8/23/2005 01:04:58pm 26.597981879 -80.440045081 80 26' 24.16" W 26 35' 52.73" N 80 26.4026667' W 26 35.8788333333333' N 
LOXA115 8/23/2005 01:26:04pm 26.484225781 -80.445336745 80 26' 43.21" W 26 29' 3.21" N 80 26.7201667' W 26 29.0535' N 
LOXA107 8/31/2005 11:40:28am 26.587390459 -80.421444676 80 25' 17.20" W 26 35' 14.61" N 80 25.286667' W 26 35.2435' N 
LOXA106 8/31/2005 11:50:02am 26.592206216 -80.431280960 80 25' 52.61" W 26 35' 31.94" N 80 25.876833' W 26 35.5323333333333' N 
LOXA105 8/31/2005 12:00:07pm 26.591899226 -80.436094071 80 26' 9.94" W 26 35' 30.84" N 80 26.1656667' W 26 35.514' N 
LOXA102 8/31/2005 12:13:03pm 26.595988767 -80.425537688 80 25' 31.94" W 26 35' 45.56" N 80 25.532333' W 26 35.7593333333333' N 
LOXA103 8/31/2005 12:28:13pm 26.612851423 -80.416436308 80 24' 59.17" W 26 36' 46.27" N 80 24.98616667' W 26 36.7711666666667' N 
LOXA120 9/6/2005 12:00:29pm 26.493410539 -80.383079866 80 22' 59.09" W 26 29' 36.28" N 80 22.9848333' W 26 29.6046666666667' N 
LOXA119 9/6/2005 12:19:58pm 26.486214619 -80.401808449 80 24' 6.51" W 26 29' 10.37" N 80 24.1085' W 26 29.1728333333333' N 
LOXA118 9/6/2005 12:33:28pm 26.489289243 -80.426390912 80 25' 35.01" W 26 29' 21.44" N 80 25.5835' W 26 29.3573333333333' N 
LOXA117 9/6/2005 12:56:58pm 26.485804269 -80.435685796 80 26' 8.47" W 26 29' 8.90" N 80 26.14116667' W 26 29.1483333333333' N 
LOXA116 9/6/2005 01:03:09pm 26.483058602 -80.441097999 80 26' 27.95" W 26 28' 59.01" N 80 26.4658333' W 26 28.9835' N 
LOXA121 9/6/2005 01:24:36pm 26.467676727 -80.441132313 80 26' 28.08" W 26 28' 3.64" N 80 26.468' W 26 28.0606666666667' N 
LOXA123 9/6/2005 02:12:50pm 26.426753074 -80.400363722 80 24' 1.31" W 26 25' 36.31" N 80 24.0218333' W 26 25.6051666666667' N 
LOXA101 9/13/2005 01:53:06pm 26.667392489 -80.366364752 80 21' 58.91" W 26 40' 2.61" N 80 21.9818333' W 26 40.0435' N 
LOXA122 9/15/2005 02:33:52pm 26.464042966 -80.428433669 80 25' 42.36" W 26 27' 50.55" N 80 25.706' W 26 27.8425' N 
LOXA126 8/10/2005 09:12:27am 26.506011481 -80.225851709 80 13' 33.07" W 26 30' 21.64" N 80 13.55116667' W 26 30.3606666666667' N 
LOXA124 8/10/2005 09:41:59am 26.455353967 -80.238754550 80 14' 19.52" W 26 27' 19.27" N 80 14.325333' W 26 27.3211666666667' N 
LOXA127 8/10/2005 10:08:20am 26.515134740 -80.255559757 80 15' 20.02" W 26 30' 54.49" N 80 15.3336667' W 26 30.9081666666667' N 
LOXA128 8/10/2005 10:57:04am 26.525162864 -80.394012101 80 23' 38.44" W 26 31' 30.59" N 80 23.6406667' W 26 31.5098333333333' N 
LOXA114 8/10/2005 11:05:35am 26.524392580 -80.400839654 80 24' 3.02" W 26 31' 27.81" N 80 24.050333' W 26 31.4635' N 
LOXA113 8/10/2005 11:13:08am 26.524427841 -80.406998750 80 24' 25.20" W 26 31' 27.94" N 80 24.42' W 26 31.4656666666667' N 
LOXA111 8/10/2005 11:21:10am 26.525335828 -80.413147047 80 24' 47.33" W 26 31' 31.21" N 80 24.7888333' W 26 31.5201666666667' N 
LOXA112 8/10/2005 11:32:01am 26.527124725 -80.428373322 80 25' 42.14" W 26 31' 37.65" N 80 25.702333' W 26 31.6275' N 
LOXA109 8/10/2005 11:52:04am 26.555288645 -80.432051570 80 25' 55.39" W 26 33' 19.04" N 80 25.92316667' W 26 33.3173333333333' N 
LOXA110 8/10/2005 12:07:41pm 26.555239734 -80.417691537 80 25' 3.69" W 26 33' 18.86" N 80 25.0615' W 26 33.3143333333333' N 
LOXA108 8/10/2005 12:26:58pm 26.577960101 -80.405853442 80 24' 21.07" W 26 34' 40.66" N 80 24.35116667' W 26 34.6776666666667' N 
LOXA139 8/10/2005 01:13:16pm 26.593325251 -80.337153885 80 20' 13.75" W 26 35' 35.97" N 80 20.22916667' W 26 35.5995' N 
LOXA131 8/11/2005 10:46:50am 26.574747906 -80.277646525 80 16' 39.53" W 26 34' 29.09" N 80 16.6588333' W 26 34.4848333333333' N 
LOXA130 8/11/2005 11:33:03am 26.582118809 -80.270055306 80 16' 12.20" W 26 34' 55.63" N 80 16.20333' W 26 34.9271666666667' N 
LOXA133 8/11/2005 11:58:43am 26.605089596 -80.295574907 80 17' 44.07" W 26 36' 18.32" N 80 17.7345' W 26 36.3053333333333' N 
LOXA134 8/11/2005 01:03:01pm 26.609856637 -80.308603250 80 18' 30.97" W 26 36' 35.48" N 80 18.51616667'W 26 36.5913333333333' N 
LOXA137 8/11/2005 01:25:21pm 26.615103372 -80.321703271 80 19' 18.13" W 26 36' 54.37" N 80 19.30216667' W 26 36.9061666666667' N 
LOXA136 8/11/2005 01:57:35pm 26.618793017 -80.318666883 80 19' 7.20" W 26 37' 7.65" N 80 19.12' W 26 37.1275' N 
LOXA138 8/11/2005 02:06:17pm 26.606816926 -80.326665374 80 19' 36.00" W 26 36' 24.54" N 80 19.6' W 26 36.409' N 
LOXA140 9/12/2005 02:44:34PM 26.637603226 -80.349094316 80 20' 56.74" W 26 38' 15.37" N 80 20.9456667'W 26 38.2561666666667' N 
* DMS = Degrees Minutes Seconds 
** DM = Degrees Minutes Decimal Minutes