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1-D Deep Ventilation (1DDV) model for Crater Lake, Oregon, 1950-2100 This data release contains the source code for the 1-D Deep Ventilation (1DDV) model (written in the Matlab programming language), and the input and output data from that model that were used to simulate temperature, salinity, and dissolved oxygen (DO) at specific depths in the lake. The input data consisted of: 1. daily average surface water temperature either a. collected by thermistors (Crawford_and_Collier_2007) between 1992 and 2013 and used for calibration/validation, or b. simulated by air2water from downscaled MACA outputs of air temperature (Abatzoglou_and_Brown_2012) for future simulations following the method in Piccolroaz_et_al_2013; 2. daily average wind speed either a. collected by the National Parks... Categories: Data; Tags: Crater Lake, Oregon, USGS Science Data Catalog (SDC), Water Quality, climate change, deep lake mixing, All tags... inlandWaters, water circulation, water quality, Fewer tags Input and results from a random forest classification (RFC) model that predicts redox conditions in groundwater in the contiguous United States This data release provides model inputs and outputs for a model that predicts redox conditions in groundwater in the contiguous United States. Input variables describe the hydrology, soils, geology, and hydrologic position of groundwater sample locations. The data release accompanies a journal article that describes model development and applications (Tesoriero_and_others_2023). Categories: Data; Tags: Hydrology, USGS Science Data Catalog (SDC), United States, environment, groundwater, All tags... inlandWaters, Fewer tags Input and results from boosted regression tree and artificial neural network models that predict daily maximum pH and daily minimum dissolved oxygen in Upper Klamath Lake, 2005-2019 This data release contains the model inputs, outputs, and source code (written in R) for the boosted regression tree (BRT) and artificial neural network (ANN) models developed for four sites in Upper Klamath Lake which were used to simulate daily maximum pH and daily minimum dissolved oxygen (DO) from May 18th to October 4th in 2005-12 and 2015-19 at four sites, and to evaluate variable effects and their importance. Simulations were not developed for 2013 and 2014 due to a large amount of missing meteorological data. The sites included: 1) Williamson River (WMR), which was located in the northern portion of the lake near the mouth of the Williamson River and had a depth between 0.7 and 2.9 meters; 2) Rattlesnake... Categories: Data; Tags: Oregon, USGS Science Data Catalog (SDC), Upper Klamath Lake, Water Quality, environment, All tags... hydrology, inlandWaters, surface water quality, water chemistry, Fewer tags Water quality measurements in off-channel water bodies of the Willamette River near Albany and Keizer, OR (2017 and 2019) The tabular data sets and associated maps in this data release represent water-quality data that were collected between April and November of 2017 and between July and November of 2019 to describe baseline conditions prior to or sometimes following treatments using herbicides or other methods to reduce the biomass of non-native water primrose (Ludwigia) within off-channel water bodies of the Willamette River near Albany and Keizer, Oregon. The water-quality parameters measured in this study included water temperature, specific conductance, pH, dissolved oxygen, turbidity, total chlorophyll, phycocyanin (blue-green algae pigment), and fluorescing dissolved organic matter in surface water. Categories: Data; Tags: Albany, Benton County, Keizer, Linn County, USGS Science Data Catalog (SDC), All tags... Water Quality, Western Oregon, Willamette Mission State Park, Willamette River, algae, environment, inlandWaters, oxygen content (water), water pH, water quality, water temperature, Fewer tags Upper Klamath and Agency Lakes May/June 1996 bathymetric mapping project Bathymetric data were collected over all boatable areas of Upper Klamath and Agency Lakes, located in South-Central Oregon, in May and June of 1996. Areas that were too shallow (less than 1.2m) and/or covered with aquatic vegetation were not mapped. A 21ft tunnel-hull boat was fitted with an adjustable transducer mount on the stern. The transducer was mounted on the starboard side of the prop to minimize prop noise interference. A global positioning system (GPS) "rover" receiver's antennae mast was mounted directly above the transducer and connected to a Trimble 4000 GPS receiver. Differential correction updates were provided to the Trimble receiver at 1 second intervals from an OmniStar (John Chance Co., Houston,... Categories: Data; Tags: Agency Lake, Geography, Klamath County, Oregon, USGS Science Data Catalog (SDC), All tags... Upper Klamath Lake, bathymetry, elevation, geomorphology, inlandWaters, limnology, Fewer tags Input and results from a boosted regression tree (BRT) model relating base flow nitrate concentrations in the Chesapeake Bay watershed to catchment characteristics (1970-2013) This data release contains a boosted regression tree (BRT) model (written in the R programming language), and the input and output data from that model that were used to relate base flow nitrate concentrations in the Chesapeake Bay watershed to catchment characteristics. The input data consists of two types of information: 1) surface water nitrate concentrations collected by the USGS and partnering agencies in the Chesapeake Bay watershed between 1970 and 2013 and 2) potential predictor variables that included nitrogen sources, catchment characteristics, soil and groundwater chemistry, soil drainage and composition, and aquifer geology. The results from the BRT model were used to identify ten significant predictors... Categories: Data; Tags: Chesapeake Bay Basin, USGS Science Data Catalog (SDC), nutrient content (water), surface water quality