### THIS RESOURCE WAS DEVELOPED AS PART OF THE STUDY: 

Dunn, D.G., Crookston, B. M., Phillips, C., Neilson, B.T. (2025). Seasonal Water and Salt Cycling in the Great Salt Lake after Opening the New Causeway Breach. 
	Journal of Hydrology: Regional Studies. 

### DATA COMPILATION
All methods used to compile and format the data and calculate key variables are also available in: Dunn (2024)

#### GREAT SALT LAKE COMPILED SALINITY DATA
file: "GSL_compiled_ow_salinity_data_Oct2016_to_Feb2024.csv"
contents: Salinity data derived from density, specific conductance, and percent salinity from October 2016 to February 2024 used in the analysis

#### GREAT SALT LAKE SALINITY PROXY MEASUREMENTS
Analytical and field collection methods for these datasets are documented in: Great Salt Lake Salinity Advisory Committee. (2020)

## Density
file: "GSL_ow_density_data_Jun1966_Feb2024.csv"
contents:open water density measurements from sites utilized in the analysis

Compiled from publicly available datasets
U.S. Geological Survey (USGS) : https://waterdata.usgs.gov/nwis
Utah Geological Survey (UGS) : https://geology.utah.gov/docs/xls/GSL_brine_chem_db.xlsx

## Specific Conductance
file: "GSL_ow_specific_conductance_data_Feb1960_Feb2024.csv"
contents:open water specific conductance measurements from sites utilized in the analysis

Compiled from publicly available datasets
U.S. Geological Survey (USGS) : https://waterdata.usgs.gov/nwis
HDR Engineering Inc.(HDR) : https://documents.deq.utah.gov/water-quality/facilities/401-wq-cert/DWQ-2022-001293.pdf

## Percent Salinity
file: "GSL_ow_percent_salinity_data_July2000_Nov2023.csv"
contents:open water percent salinity measurements from sites utilized in the analysis
NOTE - lattitude and longitude of sampling sites are approximate, estimated from location map published in: Great Salt Lake Salinity Advisory Committee. (2020)

Compiled from publicly available datasets
Utah Department of Wildlife Resources (DwiR) : via a Government Records Access and Management Act reques

## Salinity derived from specific conductance via field instrumentation
file: "GSL_ow_salinity_data_derived_from_specific_conductance_June2016_Nov2021.csv"
contents: open water salinity measurements derived from conductivity meter and reported by the Brine Shrimp Cooperative
NOTE - lattitude and longitude of sampling sites are approximate, estimated from location map published by the Brine Shrimp Cooperative: https://doi.org/10.1111/lre.12421

Compiled from publicly available datasets
Brine Shrimp Cooperative (BSC) : https://doi.org/10.1111/lre.12421

#### ESTIMATED EVAPORATION DATA
file: "GSL_daily_climate_data_Jan2017_to_Sep2023.csv"
contents: daily time series of evaporation and climate variables used to estimate evaporation

Climate data was compiled from the Utah Climate Center (UCC) operated by Utah State University available at: https://climate.usu.edu/swco/
Evaporation was calculated using methods outlined in: Mohammed and Tarboton (2012)

#### NEW BREACH DISCHARGE DATA
file: "GSL_daily_New_Breach_discharge_salinity_mass_flux_data_Jan2017_to_Sep2023.csv"
contents: daily time series of south to north and north to south flow through the New Breach 

Continuous New Breach bi-directional discharge data was compiled from outputs from models developed to predict New Breach exchange flows and discrete discharge measurements 
New Breach flow models are documented in: Larsen (2024)

#### NEW BREACH SALINITY DATA
file: "GSL_daily_New_Breach_discharge_salinity_mass_flux_data_Jan2017_to_Sep2023.csv"
contents: daily time series of the salt concentration of south to north and north to south flow through the New Breach and total salt flux

Continuous salinity data was derived from specific conductance field data collected by the Utah Water Research Labratory following methods documented in: Dunn (2024), Rasmussen (2022)

#### RIVER INFLOW DATA
file: "GSL_daily_river_inflow_data_Jan2017_to_Sep2023.csv"
contents: daily inflow data from the Bear River, Weber River, and Jordan River (via Goggin Drain and Farmington Bay) 

compiled from the USGS NWIS database : https://waterdata.usgs.gov/nwis

#### DATA COLLECTION SITE LOCATION METADATA
open water data sites: "GSL_open_water_data_collection_sites_meta.csv"
climate data sites: "GSL_climate_data_collection_sites_meta.csv"
inflow data sites: "GSL_inflow_data_collection_sites_meta.csv"

#### SPECIFIC CONDUCTANCE CONVERSION EQUATION DATA
file:"UWRL_specific_conductance_experiment_data.csv"
contents: data collected during an experiment performed at the Utah Water Research Labratory to develop a specific conductance conversion equation applicable to GSL salinities

Experimental methods and development of the specific conductance conversion equation are documented in: Dunn (2024)

### CITATIONS
Dunn, D. G. (2024). A Mass Balance Model for the Great Salt Lake, UT with Adaptive Management Applications. Utah State University.

Dunn, D.G., Crookston, B. M., Phillips, C., Neilson, B.T. (2025). Seasonal Water and Salt Cycling in the Great Salt Lake after Opening the New Causeway Breach. 
	Journal of Hydrology: Regional Studies. 

Great Salt Lake Salinity Advisory Committee. (2020). Round Robin of Methods to Estimate the Salinity of Great Salt Lake Waters. 
	Utah Geological Survey. https://doi.org/10.34191/OFR-727

Larsen, E. (2024). Rapid Prediction of Buoyancy-Driven Exchange Flows at the Great Salt Lake: ML Models and a 1D Shallow water approach. 
	Utah State University. 

Mohammed, I. N., and Tarboton, D. G. (2012). An examination of the sensitivity of the Great Salt Lake to changes in 
	inputs: GREAT SALT LAKE SENSITIVITY INDEX. Water Resources Research, 48(11). https://doi.org/10.1029/2012WR011908

Rasmussen, M. (2022). Using Computational Fluid Dynamics to Predict Flow Through the West Crack Breach of the Great Salt Lake Railroad Causeway. Utah State University.