Dan Nowacki Ray Schaffranek (retired) Marvin A. Franklin (retired) 2005 spreadsheet http://sofia.usgs.gov/projects/flow_velocity/ The sheet flow over the Buttonwood Embankment during periods of high flow is an unknown element of the water budget for the Everglades. An ongoing project to estimate the flows over the embankment through modeling will require water-level and water velocity data measured at the embankment to accurately estimate simulated flows over this physical land feature. The actual measurement of water velocities and depths at the embankment would greatly improve the model calibration. Although it is virtually impossible to conventionally measure flow over the entire embankment, water depths and velocities at known points along the embankment, combined with the detailed topography of the embankment being developed in another ongoing project, should allow a much better estimate of the total flow than presently available. The objective of the project is to make the best possible estimate of the flow velocities and water depths across Buttonwood Embankment during high flow for use as model input for an ongoing project being conducted in the USGS-WRD office in Miami. Estimates will be used to provide management alternatives and will create salinity concentrations suitable for ecologic integrity. This project has been integrated into the TIME project. The project was started by Marvin Franklin 199707 199709 199711 199807 ground condition Complete None planned -80.4 -80.2 25.7 25.5 none velocity flow cross section hydrology ISO 19115 Topic Category environment inlandWaters 007 012 Department of Commerce, 1995, Countries, Dependencies, Areas of Special Sovereignty, and Their Principal Administrative Divisions, Federal Information Processing Standard (FIPS) 10-4, Washington, D.C., National Institute of Standards and Technology United States US U.S. Department of Commerce, 1987, Codes for the identification of the States, the District of Columbia and the outlying areas of the United States, and associated areas (Federal Information Processing Standard 5-2): Washington, D. C., NIST Florida FL Department of Commerce, 1990, Counties and Equivalent Entities of the United States, Its Possessions, and Associated Areas, FIPS 6-3, Washington, DC, National Institute of Standards and Technology Miami-Dade County none Central Everglades Buttonwood Embankment none periodic none none Dan Nowacki U.S. Geological Survey mailing address

430 National Center

Reston VA 20192 USA 703 648-5467 dnowacki@usgs.gov Velocity data and cross section data was collected by Paul Meadows, Darlene Blum, Mark Stephens, Greg Donley, Kenny Kalan, Don Goin, Gina Tillis, Eric Swain, John Pittman, Alex Gallagher, James Dubuisson, Harry Jenter, and Lavetra Sloan. Excel spreadsheets, Access database Tillis, G. M. 2001 report USGS Open-File Report 01-225 Tallahassee, FL U.S. Geological Survey http://fl.water.usgs.gov/Abstracts/ofr01_225_tillis.html Velocity and flow were collected for Transects One, Two, Three, and the Stationary Transect. Velocity only was collected for Transect Four and C-11. Discharge measurements made with conventional meters are available in the Culverts dataset. Data was collected in July, September, and November 1997 and July 1998. Not all sites have data for all collection dates. See the individual datasets for available data. Global Positioning System (GPS) instrumentation established horizontal sampling locations in North American Datum of 1983 (NAD83) coordinates. Field notes included the latitude and longitude coordinates, GPS drift, and description of distinctive features (nearby staff gages and cypress heads). These coordinates were converted to UTM coordinates (NAD83, Zone 17) for reporting and modeling purposes. Measurement sites were restricted to areas along established airboat trails. Initially internal flows were measured across three transect lines (T1, T2, and T3) bisecting the Taylor Slough Basin from east to west as well as a transect along the centerline of the axis of the slough. In November 1997, a fourth transect (T4) was added to the data collection effort, connecting transects T2 and T3 along a north-south airboat trail. Three-dimensional velocity measurements were conducted at the transect sites using ADVs. Water depth, water-quality parameters, litter-layer thickness, weather conditions, site description, site location, bottom conditions, and vegetative cover were recorded concurrently with ADV measurements. Individual velocity sampling sites were chosen to be representative of the vegetation type and density as well as water depth in the surrounding area. Four intensive data-collection trips into the Taylor Slough Basin were conducted during July, September, and November 1997 and July 1998. These trips coincided with precipitation events that produced sufficient water levels for airboat access and covered a wide range of water levels and flow conditions. The ADV meters provided the required levels of accuracy in flow-velocity measurements while enabling rapid collection of multiple time-series of flow data at remote sites. Concurrently, flow measurements were made along bordering road culverts and under L-31W and Taylor Slough bridges. At sites where the use of acoustic instruments was impractical, vertical-axis current meters were used to measure water velocity. Water-quality meters (collected with all velocity profiles) collected data at middepth and measured the temperature, specific conductance, salinity, dissolved oxygen, and pH. Measured temperature and salinity values were use in computation of water velocity. All water-quality meters were calibrated at the beginning of each day. After positioning the ADV for a velocity measurement with minimal disturbance to the surrounding vegetation and flow field, the hydrographer retreated from the probe and the presumed flow path. About 2 minutes was allowed for the sample area to return to equilibrium before starting a velocity measurement. Measurement bursts lasted 120 seconds, at a 10 hertz sampling rate, and produced time-series measurements of 1200 pints at the appropriate depths in the water column. 199807 Dan Nowacki U.S. Geological Survey mailing address

430 National Center

Reston VA 20192 USA 703 648-5467 dnowacki@usgs.gov Point Universal Transverse Mercator 17 0.9996 -81 0 500000 0 Coordinate Pair 0.001 0.001 meters North American Datum of 1983 Geodetic Reference System 80 6378137 298.257 Heather S.Henkel U.S. Geological Survey mailing address

600 Fourth St. South

St. Petersburg FL 33701 USA 727 803-8747 ext 3028 727 803-2030 hhenkel@usgs.gov Flow and Velocity data The data have no explicit or implied guarantees. Excel spreadsheets There are Excel spreadsheets for the Taylor Slough sites, Transects One, Two, Three, and Four, C-111 Transect, Stationary Transect, and Culverts. 12 http://sofia.usgs.gov/exchange/franklin/franklinflow.html Data may be downloaded from the SOFIA website. Access 2000 The database contains the data for the Taylor Slough sites. 5.2 http://sofia.usgs.gov/exchange/franklin/franklinflow.html Data may be downloaded from the SOFIA website. html 0.3 http://sofia.usgs.gov/exchange/franklin/franklinflow.html Data may be downloaded from the SOFIA website. none 20070323 Heather Henkel U.S. Geological Survey mailing and physical address

600 Fourth Street South

St. Petersburg FL 33701 USA 727 803-8747 ext 3028 727 803-2030 sofia-metadata@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998