M.A. Stewart T. N. Bhatt; R. J. Fennema; D. V. Fitterman 2002 report USGS Open-File Report 02-59 Reston, VA U.S. Geological Survey http://sofia.usgs.gov/publications/ofr/02-59 The report describes the history of roads through the Lower Glades of Everglades National Park and their influence on salinity intrusion. The tables contain data on flows through culverts beneath the main park road. The main road in Everglades National Park (ENP) connects Flamingo with the Park's entrance and continues onto the coastal ridge of Miami-Dade County. The current alignment of the road, an extension of State Road 9336, formerly known as State Road 27, was built in 1956 when a portion of what was then known as Ingraham Highway was replaced with a more northward section. The road has been the subject of some controversy. Some scientists have claimed that the roadbed is a barrier to natural flow into Florida Bay, while others have blocked culverts to hold fresh water back in the wetlands east of the road and north of Florida Bay. The South Florida Natural Resources Center conducted a study to access the current condition of the culverts and to determine the patterns of water flow in the area adjacent to the road. Information has been gathered on the road's history, the historical water levels and flow patterns. Monitoring sites have been installed to record water level, salinity, and flow, which are being measured during times when water is present. The USGS conducted investigations in the southern Everglades to assess the extent of saline-water intrusion by means of airborne electromagnetic geophysical measurements. The data in the tables are part of the report which condenses the information gathered as of 2002. 19970414 19971028 ground condition Complete None planned -81 -80.5 25.5 25 none hydrology flow salinity discharge geography ISO 19115 Topic Category environment geoscientificInformation inlandWaters 007 008 012 Department of Commerce, 1995, Countries, Dependencies, Areas of Special Sovereignty, and Their Principal Administrative Divisions, Federal Information Processing Standard (FIPS) 10-4, Washington, DC, 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, DC, 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 Monroe County USGS Geographic Names Information System Everglades National Park Flamingo Mahogany Hammock Shark Slough Taylor Slough none Central Everglades Old Inghram Highway none none David Fitterman U.S. Geological Survey Project Chief mailing address

P. O. Box 25046 Denver Federal Center MS 964

Denver CO 80225 USA 303 236-1382 303 236-1425 fitter@usgs.gov http://sofia.usgs.gov/publications/ofr/02-59/images/fig1x.gif location of S. R. 9336 in Everglades National Park GIF text/html Fitterman, David V. Deszcz-Pan, Maria; Stoddard, Carl E. 1999 report USGS Open-File Report 99-426 Reston, VA U.S. Geological Survey http://sofia.usgs.gov/publications/ofr/99-426/ unavailable unknown Staff gauges have been installed in and near seven culverts along the main Park road and at two locations on the Pay-hay-okee overlook access road. The recorders have been installed in upstream/downstream pairs. Along with the discontinuous staff gauges (88NGVD), two stations (SR-1 and SR-2) measuring continuous stage have been installed between culverts 57 and 58. SR1 and SR2 have been operational since November 1997. Fifteen culverts have been selected for routine flow measurements along the main Park road along with two culverts on the Pay-hay-okee overlook access road and one on the road leading to Mahogany Hammock. Point velocity measurements were taken at each observation culvert using a Marsh McBirney Portable Water Current Meter beginning in 1996. These measurements are aiding in developing a representation of the flow patterns between Royal Palm and Mzarek Pond. Unknown David Fitterman U.S. Geological Survey Project Chief mailing address

P. O. Box 25046 Denver Federal Center MS 964

Denver CO 80225 USA 303 236-1382 303 236-1425 fitter@usgs.gov State Route 9336 0.1 0.1 Degrees, minutes, and decimal seconds North American Datum of 1983 Geodetic Reference System 80 6378137 298.257 North American Vertical Datum of 1988 0.01 feet Attribute values Data collected for the culverts include salinity conditions in microS/cm, discharge conditions with positive flow values denoting south or east flows and negative values denoting north or west flows in cubic feet per second (cfs), and stage conditions in feet. USGS personnel 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 salinity, discharge, and stage conditions No warrantees are implied or explicit for the data tables/html unknown http://sofia.usgs.gov/publications/ofr/02-59/tables.html Data may be downloaded from the SOFIA website none 20070525 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