R-package

To encourage the use of the CSI in current and future research endeavors this investigation addressed three activities: First, a software package was developed for consistency and ease of computation, which includes the pre-processing of salinity data, filling missing values, computing the CSI, post-processing, plotting, and generating the supporting metadata. This software package is available for download from the Geological Survey R Archive Network (https://github.com/USGS-R/CSI). Second, using telemetered salinity data, the real-time computation of the CSI has been prototyped and disseminated on the web for 29 USGS sites in North Carolina, South Carolina, Georgia, and Florida. The availability of real-time data for these sites allows the CSI values and associated salinity, temperature, and gage height to be updated daily. Third, historical CSI values have been computed at sites along the southeastern Atlantic coast (Florida to North Carolina) and the Gulf of Mexico (Texas to Florida) to increase the opportunity for linking the CSI to ecological response data. The period of record for these CSI calculations generally range from the start of the record for each site to 9/30/2018, the end date chosen for this synoptic set of published CSIs.

Real-time CSI

Real-time CSIs are currently available on this site and the USGS South Florida Information Access (SOFIA) Coastal Everglades Depth Estimation Network (EDEN) site. These real-time CSIs were selected for U.S. Geological Survey National Water Information System (USGS NWIS) stations where long-term specific conductance and salinity data are being collected.

Historic CSI

The historic CSIs calculations for prioritized sites are available through the USGS ScienceBase Catalog https://www.sciencebase.gov/catalog/item/5852c109e4b0e2663625ed92.

Locations of the salinity-monitored water-quality sites used in the Coastal Salinity Index calculations.

Caption: Locations of the salinity-monitored water-quality sites used in the Coastal Salinity Index calculations.

Station Table (click on column headers to sort table)

Station Name Station Number Agency Begin Date End Date State Latitude Longitude CSI Location
Fish River WKBFRWQ NERRS 10/27/1995 9/30/2018 AL 30.41620 -87.82280 ScienceBase
Cat Point APACPWQ NERRS 1/1/2002 9/30/2018 FL 29.70210 -84.88020 ScienceBase
Dry Bar APADBWQ NERRS 1/1/2002 9/30/2018 FL 29.67470 -85.05830 ScienceBase
East Bay Bottom APAEBWQ NERRS 5/1/1995 9/30/2018 FL 29.78580 -84.87520 ScienceBase
East Side Creek near Lake Ingraham 250802081035500 USGS 2/20/2009 9/30/2018 FL 25.13696944 -81.0643806 EDEN
McCormick Creek at mouth, near Key Largo 251003080435500 USGS 10/28/1995 9/30/2018 FL 25.16859547 -80.7333764 EDEN
Taylor River at mouth, near Homestead 251127080382100 USGS 10/26/1995 9/30/2018 FL 25.1909944 -80.6388378 EDEN
Mud Creek at mouth, near Homestead 251209080350100 USGS 10/27/1995 9/30/2018 FL 25.2037021 -80.5838946 EDEN
Upstream Taylor River near Homestead, FL 251241080385300 USGS 7/31/1999 9/30/2018 FL 25.2102972 -80.6476667 EDEN
Trout Creek at mouth, near Key Largo 251253080320100 USGS 1/21/1996 9/30/2018 FL 25.21530426 -80.5332849 EDEN
Joe Bay 2E, near Key Largo 251355080312800 USGS 5/27/1999 9/30/2018 FL 25.232625 -80.5248667 EDEN
West Highway Creek, near Homestead 251433080265000 USGS 2/8/1996 9/30/2018 FL 25.24210833 -80.4475722 EDEN
G -3777 251457080395802 USGS 10/5/2003 9/30/2018 FL 25.25255556 -80.6662611 EDEN
EDEN_3 In Everglades National Park 253044080555900 USGS 11/10/2005 9/30/2018 FL 25.512125 -80.9331528 EDEN
Bottle Creek at Rookery Branch near Homestead, FL 022908295 USGS 10/27/2003 9/30/2018 FL 25.46797778 -80.8545278 EDEN
Barron River at Everglades City, FL 02290928 USGS 9/12/2001 9/30/2018 FL 25.8697222 -81.3825 EDEN
Shark River Below Gunboat Island 252230081021300 USGS 3/16/2001 12/15/2014* FL 25.3753255 -81.036493 ScienceBase
Haulover Canal near Mims,FL 02248380 USGS 4/8/1998 9/29/2016* FL 28.73638079 -80.754773 ScienceBase
North River Upstream of Cutoff 022908205 USGS 3/16/2001 12/17/2014* FL 25.33900677 -80.9131256 ScienceBase
Broad River near the cutoff 02290878 USGS 2/23/2001 1/21/2015* FL 25.50138889 -81.0769444 ScienceBase
Chatham River near the Watson Place 02290888 USGS 3/29/2001 1/20/2015* FL 25.70916667 -81.2497222 ScienceBase
Lostmans River below Second Bay 02290918 USGS 3/27/2001 1/21/2015* FL 25.55555556 -81.1647222 ScienceBase
Lopez River 02290942 USGS 4/19/2001 1/20/2015* FL 25.79138889 -81.2997222 ScienceBase
Manatee River at Fort Hamer FL 02300021 USGS 1/25/2001** 10/13/2016* FL 27.51837203 -82.4281499 ScienceBase
Alafia River at Bell Shoals near Riverview FL 02301638 USGS 4/18/1998 9/30/2018 FL 27.85891477 -82.2737021 ScienceBase
Alafia River at Riverview FL 02301718 USGS 5/14/1999 9/30/2018 FL 27.86780308 -82.3198141 ScienceBase
Alafia River at Gibsonton FL 02301721 USGS 5/10/1999 9/30/2018 FL 27.85974739 -82.3842598 ScienceBase
Hillsborough River at Rowlett Pk Dr near Tampa FL 02304510 USGS 12/24/1996 9/30/2018 FL 28.02113015 -82.4345385 ScienceBase
Sulphur Springs at Sulphur Springs FL 02306000 USGS 5/23/1999 9/30/2018 FL 28.02113004 -82.451761 ScienceBase
Hillsborough River at Platt Street at Tampa FL 02306028 USGS 2/17/2001** 9/30/2018 FL 27.94196627 -82.4587057 ScienceBase
Sapelo River near Eulonia GCE LTER 1 GCE LTER 9/13/2001 9/30/2018 GA 31.53748333 -81.42398333 ScienceBase
Sapelo River near Four Mile Island GCE LTER 2 GCE LTER 10/26/2001 9/30/2018 GA 31.544957 -81.319934 ScienceBase
Sapelo Sound near North Sapelo GCE LTER 3 GCE LTER 8/8/2001 9/30/2018 GA 31.548264 -81.210833 ScienceBase
Hudson Creek GCE LTER 4 GCE LTER 2/3/2001 9/30/2018 GA 31.453559 -81.362743 ScienceBase
Doboy Sound near Commodore Island GCE LTER 6 GCE LTER 2/25/2002 9/30/2018 GA 31.39345901 -81.30492173 ScienceBase
Altamaha River near Carrs Island GCE LTER 7 GCE LTER 8/10/2001 9/30/2018 GA 31.33819 -81.475477 ScienceBase
Altamaha River near Alligator Creek GCE LTER 8 GCE LTER 10/26/2001 9/30/2018 GA 31.310279 -81.410051 ScienceBase
Altamaha River near Rockdedundy Island GCE LTER 9 GCE LTER 2/25/2002 9/30/2018 GA 31.320099 -81.321964 ScienceBase
Duplin River at Flume Dock GCE LTER 10 GCE LTER 7/17/2003 9/30/2018 GA 31.48248333 -81.26791667 ScienceBase
Cabretta Creek SAPCAWQ NERRS 8/30/2004 9/30/2018 GA 31.44370 -81.23990 ScienceBase
Dean Creek SAPDCWQ NERRS 5/1/2004 9/30/2018 GA 31.38960 -81.27890 ScienceBase
Hunt Dock SAPHDWQ NERRS 7/3/1999 9/30/2018 GA 31.47860 -81.27310 ScienceBase
Lower Duplin SAPLDWQ NERRS 1/1/1999 9/30/2018 GA 31.41794 -81.29605 ScienceBase
Savannah River at GA 25, at Port Wentworth, GA 02198920 USGS 10/1/1987 9/30/2018 GA 32.1660358 -81.1537237 SAWSC
Reggio Canal near Wills Point, LA 073745253 USGS 1/27/1999 9/30/2018 LA 29.78416667 -89.9375 ScienceBase
Crooked B. NW of L. Cuatro Caballo near Delacroix 073745257 USGS 9/30/1998 9/30/2018 LA 29.7082661 -89.7195065 ScienceBase
Cow Bayou at American Bay nr Pointe-A-La-Hache, LA 073745258 USGS 1/28/1999 9/30/2018 LA 29.57076989 -89.7039524 ScienceBase
Black Bay nr Snake Island nr Pointe-A-La-Hache, LA 07374526 USGS 9/30/1994 9/30/2018 LA 29.63354395 -89.5636694 ScienceBase
Northeast Bay Gardene near Point-A-LA-Hache, LA 07374527 USGS 9/30/1994 9/30/2018 LA 29.5859626 -89.6060323 ScienceBase
Barataria Bay N of Grand Isle, LA 07380251 USGS 3/14/1996 9/30/2018 LA 29.42272045 -89.9506268 ScienceBase
Little Lake Near Cutoff, LA 07380335 USGS 10/1/1996 9/30/2018 LA 29.5177174 -90.1814655 ScienceBase
Houma Navigation Canal at Dulac, LA 07381328 USGS 9/30/1993** 9/30/2018 LA 29.38522075 -90.729812 ScienceBase
Caillou Lake (Sister Lake) SW of Dulac, LA 07381349 USGS 5/22/1997 9/30/2018 LA 29.24916667 -90.9211111 ScienceBase
Vermilion Bay near Cypremort Point, LA 07387040 USGS 10/1/1998** 9/30/2018 LA 29.71326575 -91.8803982 ScienceBase
North Calcasieu Lake near Hackberry, LA 08017095 USGS 7/25/1997 9/30/2018 LA 30.0318786 -93.2995989 ScienceBase
Calcasieu River at Cameron, LA 08017118 USGS 10/22/1998 9/30/2018 LA 29.8157762 -93.349043 ScienceBase
Mississippi Sound at USGS Merrill Shell Bank Light 301429089145600 USGS 9/6/1998 9/30/2018 MS 30.23825405 -89.24281939 ScienceBase
East Cribbing NOCECWQ NERRS 5/19/1994 9/30/2018 NC 33.93990 -77.94110 ScienceBase
Loosin Creek NOCLCWQ NERRS 2/26/2002 9/30/2018 NC 34.17220 -77.83280 ScienceBase
Research Creek                           NOCRCWQ NERRS 5/1/1994 9/30/2018 NC 34.15600 -77.84990 ScienceBase
Zeke's Basin NOCZBWQ NERRS 3/1/2002 9/30/2018 NC 33.95470 -77.93500 ScienceBase
Roanoke River at Halifax, NC 0208062765 USGS 3/14/1998 9/30/2018 NC 36.3311111 -77.58027778 ScienceBase
Roanoke River near Oak City, NC 02081022 USGS 3/18/1998 9/30/2018 NC 36.0136111 -77.21527778 ScienceBase
Roanoke River at Jamesville, NC 02081094 USGS 3/4/1998 9/30/2018 NC 35.81305556 -76.89277778 SAWSC
Roanoke River at NC 45 near Westover, NC 0208114150 USGS 11/26/1997 9/30/2018 NC 35.915 -76.72277778 SAWSC
Neuse River at Channel Light 9 at Cherry Point, NC 0209265810 USGS 5/31/1989 6/2/2009* NC 34.9486111 -76.8097222 ScienceBase
Station 9                                JOB09WQ NERRS 12/20/1995 9/30/2018 PR 17.94306 -66.23858 ScienceBase
Big Bay ACEBBWQ NERRS 3/3/1995 1/7/2015* SC 32.49410 -80.32410 ScienceBase
Fishing Creek ACEFCWQ NERRS 10/16/2002 9/30/2018 SC 32.63593 -80.36556 ScienceBase
Mosquito Creek ACEMCWQ NERRS 10/15/2002 9/30/2018 SC 32.55580 -80.43800 ScienceBase
St. Pierre ACESPWQ NERRS 3/3/1995 9/30/2018 SC 32.52800 -80.36144 ScienceBase
Clambank NIWCBWQ NERRS 8/17/2001 9/30/2018 SC 33.33386 -79.19304 ScienceBase
Debidue Creek NIWDCWQ NERRS 3/5/1998 9/30/2018 SC 33.36015 -79.16746 ScienceBase
Oyster Landing NIWOLWQ NERRS 1/1/1996 9/30/2018 SC 33.34935 -79.18888 ScienceBase
Thousand Acre NIWTAWQ NERRS 1/1/1995 9/30/2018 SC 33.29915 -79.25606 ScienceBase
AIW at Briarcliffe Acres at N. Myrtle Beach, SC 02110755 USGS 10/1/1983 9/30/2018 SC 33.7985057 -78.75307469 SAWSC
AIW @ Myrtlewood Golf Course @ Myrtle Beach, SC 02110760 USGS 2/19/1994** 9/30/2018 SC 33.74072759 -78.8666928 SAWSC
AIW at Grand Strand Airport N. Myrtle Beach, SC 02110770 USGS 4/16/1987 9/30/2018 SC 33.82128347 -78.7186287 SAWSC
AIW at Highway 9 at Nixons Crossroads, SC 02110777 USGS 4/14/1986 9/30/2018 SC 33.8515612 -78.6558483 SAWSC
Waccamaw River near Hagley Landing near Pawleys Island, SC 02110815 USGS 5/1/1986 9/30/2018 SC 33.44461245 -79.1739341 SAWSC
W Branch Cooper R @ Pimlico nr Moncks Corner, SC 02172020 USGS 4/27/1983 9/30/2018 SC 33.0935042 -79.9489708 SAWSC
Back River at Dupont Intake nr Kittredge, SC 02172040 USGS 7/1/1984** 9/30/2018 SC 33.06378245 -79.957027 SAWSC
Cooper R nr Goose Creek, SC 02172050 USGS 7/1/1984** 9/30/2018 SC 33.05767134 -79.93619338 SAWSC
Cooper River @ Filbin Creek @ North Charleston, SC 021720677 USGS 4/4/1997 9/30/2018 SC 32.89045228 -79.9628645 SAWSC
Wando River above Mt. Pleasant, SC 021720698 USGS 7/25/1992 9/30/2018 SC 32.8590638 -79.8961963 SAWSC
Cooper river at U.S. HWY 17 at Charleston, SC 021720709 USGS 4/11/1997 9/30/2018 SC 32.80239835 -79.9100869 SAWSC
Cooper River at Customs House (AUX) at Charleston, SC 021720710 USGS 10/30/1986 9/30/2018 SC 32.7804544 -79.923699 SAWSC
Little Back River above Lucknow Canal near Limehouse, SC 021989784 USGS 5/18/1990 9/30/2018 SC 32.18575747 -81.11789 SAWSC
Little Back River at F&W Dock, near Limehouse, SC 021989791 USGS 9/13/1989 9/30/2018 SC 32.1707582 -81.1181677 SAWSC
Buck Creek Near Longs, SC 02110400 USGS 10/1/2005 9/30/2018 SC 33.953505 -78.71973988 ScienceBase
Waccamaw River near Longs, SC 02110500 USGS 4/27/2007 9/30/2018 SC 33.9126719 -78.7150175 ScienceBase
Waccamaw River near Pawleys Island, SC 021108125 USGS 11/30/2001 9/30/2018 SC 33.50655724 -79.1269867 ScienceBase
Rediversion Canal at Santee River near St. Stephen, SC 02171645 USGS 11/17/2006 9/30/2018 SC 33.4275 -79.915 ScienceBase
Cooper River at Mobay near North Charleston, SC 02172053 USGS 9/30/1983 9/30/2018 SC 32.9835058 -79.9228612 ScienceBase
Ashley River near North Charleston, SC 021720869 USGS 5/5/2005 9/30/2018 SC 32.8346201 -80.0237014 ScienceBase
West Bay @ Tripod 6990 LCRA 12/21/1992 9/30/2018 TX 28.596 -96.04 ScienceBase
Trinity Rv at Wallisville, TX 08067252 USGS 3/19/1999 9/30/2018 TX 29.8124434 -94.7313087 ScienceBase

** Start date for calculated results chosen to eliminate long period of missing record.

* End date is equal to the last measurement date for stations that have been discontinued.