The water-quality data contained in this data release was collected in support of a project conducted by the U.S. Bureau of Reclamation (BOR), U.S. Geological Survey (USGS), U.S. Environmental Protection Agency (USEPA), University of Oklahoma, and City of Norman. This multiagency study was conducted to provide information on the use of constructed wetlands to support indirect potable reuse to achieve water supply augmentation from reuse of both treated effluent and stormwater runoff at a BOR project (Norman Project, Lake Thunderbird) in central Oklahoma. On May 9th, 2022, a parcel-tracking sampling approach was employed to collect municipal sewage samples at the untreated screened influent location and seven locations within a pilot-scale advanced-treatment process that included enhanced biological nutrient removal (BNR) and advanced wastewater treatment (AWT) processes. Additional standard-treated sewage effluent samples were collected at the same wastewater treatment plant (Norman Water Reclamation Facility) during wet (May 10, 2022) and dry periods (August 9, 2022, and April 17, 2024). In addition to the various municipal sewage samples, potential effluent-receiving surface water and urban stormwater runoff samples were collected. The potential effluent-receiving surface-water site (upper Dave Blue Creek) was sampled three times, twice during base flow (June 28, 2022, and April 16, 2024) and once during high flow (September 2, 2022) conditions. One urban stormwater runoff sample was collected on September 1, 2022. All water samples were collected and analyzed for an extensive suite of 551 organic chemicals (e.g., artificial sweeteners, disinfection byproducts, hormones, per and polyfluoroalkyl substances, pesticides, pharmaceuticals, polycyclic aromatic hydrocarbons, quaternary ammonium compounds, and wastewater compounds), 65 inorganics (e.g., nutrients, trace metals, rare-earth metals), 12 water properties, and 19 bacterial parameters.

Reservoirs are globally important sources of greenhouse gases, but the magnitude of their emissions is highly uncertain. Here we present data for 146 reservoirs from two surveys of reservoir methane and carbon dioxide emissions, one at the regional scale in the midwestern United States and one at the national scale in the conterminous United States, plus data from one reservoir in Washington and another in Puerto Rico. At all reservoirs, ebullitive and diffusive emissions and basic physiochemistry were measured at 15-70 locations during one 22 to 64-hour period during the summers of 2016-2023, with four reservoirs revisited a second time. Concomitant water chemistry measurements were also made at an index site. The dataset is comprised of two geospatial files and seven .csv files containing greenhouse gas emissions, water chemistry, morphology, and other relevant data. These data comprise the largest multi-reservoir emissions dataset ever assembled using consistent measurement methods.

Reservoirs are globally important sources of greenhouse gases, but the magnitude of their emissions is highly uncertain. Here we present data for 146 reservoirs from two surveys of reservoir methane and carbon dioxide emissions, one at the regional scale in the midwestern United States and one at the national scale in the conterminous United States, plus data from one reservoir in Washington and another in Puerto Rico. At all reservoirs, ebullitive and diffusive emissions and basic physiochemistry were measured at 15-70 locations during one 22 to 64-hour period during the summers of 2016-2023, with four reservoirs revisited a second time. Concomitant water chemistry measurements were also made at an index site. The dataset is comprised of two geospatial files and seven .csv files containing greenhouse gas emissions, water chemistry, morphology, and other relevant data. These data comprise the largest multi-reservoir emissions dataset ever assembled using consistent measurement methods.

Reservoirs are globally important sources of greenhouse gases, but the magnitude of their emissions is highly uncertain. Here we present data for 146 reservoirs from two surveys of reservoir methane and carbon dioxide emissions, one at the regional scale in the midwestern United States and one at the national scale in the conterminous United States, plus data from one reservoir in Washington and another in Puerto Rico. At all reservoirs, ebullitive and diffusive emissions and basic physiochemistry were measured at 15-70 locations during one 22 to 64-hour period during the summers of 2016-2023, with four reservoirs revisited a second time. Concomitant water chemistry measurements were also made at an index site. The dataset is comprised of two geospatial files and seven .csv files containing greenhouse gas emissions, water chemistry, morphology, and other relevant data. These data comprise the largest multi-reservoir emissions dataset ever assembled using consistent measurement methods.