Nina B. Allen Andrew S. From Richard H. Day Ken W. Krauss 20250930 tabular digital data https://doi.org/10.5066/P14GHTAE Infinity water level recorders were installed in 2004 to monitor hydrologic conditions in five freshwater forested wetlands in Louisiana: Bayou Chevreuil, Bayou Teche National Wildlife Refuge, Mandalay National Wildlife Refuge, Jean Lafitte National and Historical Park, and Treasure Island. Hourly measurements were collected continuously on a 24- hour basis through April 2022, producing an extensive record of wetland hydrology. The dataset shows daily changes, flooding, and long-term shifts in water levels across the sites. It also provides a foundation for evaluating the impacts of climate variability and extreme events on Louisiana’s freshwater ecosystems. The data was collected to determine flooding at each of the five freshwater forested wetland sites. 20040814 20220401 ground condition Complete None planned Southeastern Louisiana within the lower Mississippi River delta region -91.5271 -90.0522 29.4898 29.9930 None Southeastern Louisiana, Mississippi River Delta USGS Metadata Identifier USGS:68b86da5d4be0247d9626220 None Hydrology None. Please see 'Distribution Info' for details. None. Users are advised to read the dataset's metadata thoroughly to understand appropriate use and data limitations. Andrew From USGS - SOUTHEAST REGION Ecologist mailing and physical

WARC - Lafayette, WARC - Office/Lab Building

Lafayette LA 70506 337-266-8534 froma@usgs.gov The water level values were recorded with Infinity water level recorders, which provide reliable measurements of relative changes in water levels. The gaps in the record were marked as missing data. While no direct comparison to surveyed reference levels was made, the data is considered accurate for showing water level patterns and trends over time. Yes, the dataset matches the described monitoring records. Water levels fall within the expected range for freshwater forested wetlands in Louisiana, though gaps appear where instruments failed or data was not collected. The dataset was reviewed to avoid duplication, and the missing values are limited to recorded gaps. This dataset contains only time-series water level measurements and no geospatial layers; topology tests were not required. The dataset represents hourly water level measurements from five fixed freshwater forested wetland sites in Louisiana. It includes only hydrologic data from these specific locations and does not contain information regarding any other environmental variables. Infinity water level recorders were installed in 2004 to measure water levels for selected freshwater forests. 2004 LA Water Level 2004-2022.csv Comma Separated Value (CSV) file containing hourly hydrology data at these sites. Producer Defined Date Month Day Year Producer Defined Calendar date when each water level measurement was recorded, formatted as day-month-year Time 24 Hour Clock Producer Defined 00:00:00 23:00:00 hours and minutes BC Bayou Chevreuil Producer Defined . Data Missing Producer defined 25.19 83.65 Inches BTNWR Bayou Teche National Wildlife Refuge Producer Defined . Data Missing Producer defined 17.97 118.46 Inches MANDY Mandalay National Wildlife Refuge Producer Defined . Data Missing Producer defined 15.01 88.37 Inches JLNP Jean Lafitte National and Historical Park and Preserve Producer Defined . Data Missing Producer defined 1.17 88.15 Inches TI Treasure Island Producer Defined . Data Missing Producer defined 23.78 112.48 Inches Hourly hydrology data at each site Producer defined U.S. Geological Survey - ScienceBase mailing address

Denver Federal Center

Building 810

Mail Stop 302

Denver CO 80225 United States 1-888-275-8747 sciencebase@usgs.gov Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Digital Data https://doi.org/10.5066/P14GHTAE None 20250930 Andrew From USGS - SOUTHEAST REGION Ecologist mailing and physical

WARC - Lafayette, WARC - Office/Lab Building

Lafayette LA 70506 337-266-8534 froma@usgs.gov FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata FGDC-STD-001.1-1999