Lars Soderqvuist; Craig Thompson
This study will quantify water discharge, describe hydrodynamic characteristics of estuarine rivers of southwest Everglades National Park, and provide necessary information for the development and calibration of the TIME hydrodynamic model.
The data collection network established through this project included the following types and number of stations:
1. Five estuarine-river sites were be selected to monitor stage, flow, salinity and temperature, based on TIME model needs and other ecological work being done or planned within the study area. These sites included the continuation of two previously existing stations.
2. Six additional sites were instrumented to monitor stage, salinity, and temperature in order to provide maximum spatial coverage for the TIME model, in conjunction with ENP’s marine monitoring network. These sites were located at creeks flowing into the estuaries, within the "mixing" zone, with two located near shore in the open waters of the Gulf of Mexico.
3. All water surface elevations were referenced to arbitrary local datum and do not represent NGVD-29 nor NAVD-88 elevations. Elevation control will be established to NAVD-88 in the near future.
Data collection at all flow sites included continuous (15-minute interval) measurements of water level, water velocity, salinity, and temperature, and calibration measurements of discharge (no discharge measurements at wetland sites). Data collection at water level sites included continuous (15-minute interval) measurements of water level, salinity, temperature. Most continuous data were recorded and transmitted every 4 hours by way of Geostationary Operational Environmental Satellite (GOES) into the database of the USGS Miami Subdistrict office. Stations at which transmission of data was not possible nor required were logged, retrieved, and stored into the database of the USGS Miami Subdistrict office.
Flow stations: Estuarine stream sites were instrumented with water level, salinity, temperature, velocity sensors. Velocity data was collected with acoustic Doppler instruments, calibrated with the use of an Acoustic Doppler Current Profiler (ADCP), and used in the computation of discharge. Periodic discharge measurements were done at all new sites during the first year and every four to six months thereafter for rating verification purposes. Water quality data (salinity and temperature) were collected at two depths in the water column.
Salinity stations: Salinity stations included the collection of water level, salinity, and temperature. Two of these stations were located out in the open-water boundary of the Gulf of Mexico in order to provide tidal information for the TIME model. Salinity and temperature data were collected at one or two depths, depending on site location.
Data Analysis: Discharge data was computed using established area and velocity ratings and provided to TIME model and other researchers in the best usable format for its use within the model and/or ecological research within the area.
Work planned for FY 2003 includes:
1. Maintaining 11 to 13 monitoring stations at rivers and bays within the estuaries of the southwest coast of Everglades National Park, Big Cypress National Preserve, and the Cape Romano-Ten Thousand Islands Aquatic Preserve. These stations include North River, Shark River, Broad River, Lostman’s River, Chatham River, New River, Lopez River, Turner River, Barron River/Canal, two open-water stations in the Gulf of Mexico, ENP boundary markers near Shark Point and the mouth of Chatham River, and possibly two rivers within the Cape Romano-Ten Thousand Islands Aquatic Preserve.
2. Continue with ADCP discharge measurements for the development of velocity calibration ratings for the computation of discharge at instrumented coastal rivers.
3. Continue QA/QC of all field data.
4. Begin uploading data on the SOFIA web page and make it available to all researchers.
5. Arrange for data transfer from Tampa for data collected during 1996-2000.
6. If funding becomes available, construct and instrument monitoring stations within the Ten Thousand Islands Preserve.
1. Maintain and operate the Bottle Creek monitoring station at Rookery Branch.
2. Begin ADCP discharge measurements for the development of velocity calibration ratings for the computation of discharge at Bottle Creek and adjacent creeks.
3.Continue QA/QC of all field data.
4. Begin uploading data on the SOFIA web page and make it available to all researchers.
This task is designed to establish elevation ties between 22 monitoring gage-house measuring points and reference marks (RM’s) installed for obtaining NAVD-88 datum with GPS instrumentation.
Planned FY 2003 work includes:
1. Install stable reference marks nearby all monitoring stations.
2. Run elevation surveys from the RM’s into the gage-houses.
3. Apply (or provide to ENP) necessary correction for the transfer of NAVD-88 datum elevations to gage-houses, whenever NAVD-88 datum is established on the RM’s and made available.
Work planned for FY 2004 includes:
a) Maintain 11 monitoring stations at rivers and bays within the estuaries of the southwest coast of Everglades National Park and Big Cypress National Preserve. These stations include North River, Shark River, Broad River, Lostman’s River, Chatham River, New River, Lopez River, Turner River, Barron River/Canal, and two open-water stations in the Gulf of Mexico, ENP boundary markers near Shark Point and the mouth of Chatham River.
b) Continue with ADCP discharge measurements for the development and verification of velocity calibration ratings for the computation of discharge at instrumented coastal rivers.
c) Continue QA/QC of all field data.
d) Upload data on the SOFIA web page to make it available to all researchers.
2. Continue local elevation surveys at all monitoring stations
a) Install stable reference marks near all 18 remaining USGS and ENP monitoring stations.
b) Run elevation surveys from the Reference Marks (RM) into the gage-houses.
c) Apply (or provide to ENP) necessary correction for the transfer of NAVD-88 datum elevations to gage-houses, whenever NAVD-88 datum is established on the RM’s and made available.
1. Hydrologic monitoring of estuaries within the southwest coast of Everglades National Park
a) Maintain 11 monitoring stations at rivers and bays within the estuaries of the southwest coast of Everglades National Park and Big Cypress National Preserve. These stations include North River, Shark River, Broad River, Lostman’s River, Chatham River, New River, Lopez River, Turner River, Barron River/Canal, and two open-water stations in the Gulf of Mexico, ENP boundary markers near Shark Point and the mouth of Chatham River
b) Continue with ADCP discharge measurements for the development and verification of velocity calibration ratings for the computation of discharge at instrumented coastal rivers
c) Continue QA/QC of all field data
d) Complete upload of WY-2001 thru WY-2003 to SOFIA
e) Compute and process all hydrologic data for WY-2004
f) Begin analysis of all available data for the description of flow and salinitiy patterns of rivers and estuaries along the southwest coast of ENP, including the use of available ata filters for the calculation of NET discharges at all flow sites within the study area
2. Local elevation surveys at all monitoring stations
a) Install stable reference marks near 2 of the 4 remaining USGS monitoring stations: Chatham River near the Watson Place and Lopez River near Camp Site
b) Run elevation surveys from the RM's into the gage-houses
c) Apply necessary datum corrections to stage records, as NAVD-88 datum is established on the RM's and made available
1. Hydrologic monitoring of estuaries within the southwest coast of Everglades National Park
a) Maintain 11 monitoring stations at rivers and bays within the estuaries of the southwest coast of Everglades National Park and Big Cypress National Preserve. These stations include North River, Shark River, Broad River, Lostman’s River, Chatham River, New River, Lopez River, Turner River, Barron River/Canal, and two open-water stations in the Gulf of Mexico, ENP boundary markers near Shark Point and the mouth of Chatham River
b) Install a new station near Onion Key Bay to determine flow contributions from northwestern bays to outgoing discharges at the Lostman's River station
c) Continue with ADCP discharge measurements for the development and verification of velocity calibration ratings for the computation of discharge at instrumented coastal rivers
d) Continue QA/QC of all field data
e) Compute, process, and publish all hydrologic data for WY-2005
f) Continue analysis of all available data for the description of flow and salinity patterns of rivers and estuaries along the southwest coast of ENP, including the use of available data filters for the calculation of "residual" discharges at all flow sites within the study area
U.S. Department of the Interior, U.S. Geological Survey
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