Dale M Robertson

GLM model data sets used to evaluate changes in the hydrodynamics of Anvil Lake, Wisconsin

Interannual differences in the water quality of Anvil Lake, WI, were examined to determine how water level and climate affect the hydrodynamics and trophic state of shallow lakes, and their importance compared to anthropogenic changes in the watershed. To determine how changes in water level may affect these processes, the General Lake Model (GLM) was used to simulate how the lake’s thermal structure should change in response to changes in water level using R. This dataset includes the data inputs to the GLM model and the direct outputs from the model. Model Calibration (GLM_CalibrationZ); Simulation of with Deep Lake and Cold Weather (GLM_Deep_Cold_SimulationZ); Simulation of with Deep Lake and Hot Weather (GLM_Deep_Hot_SimulationZ);...

Tags: Anvil Lake, Climatology, GLM, MODFLOW, USGS Science Data Catalog (SDC), All tags... Vilas County, Water Resources, stratification, trophic state, water level, Fewer tags

Mississippi/Atchafalaya River Basin (MARB) SPARROW Mapper, 2002

This mapper displays SPARROW nutrient load and yield data and the importance of various nutrient sources for the MRB3 (U.S. part of the Great Lakes basin and the Ohio, Upper Mississippi, and Red River basins), given nutrient inputs similar to 2002. Rankings can be shown by major watershed, state, HUC8, tributary, and catchment. Nutrient data can be explored using maps and interactive graphs and tables. Modeling data can be exported as an Excel spreadsheet.

Description of Work USGS is creating forecasting tools for managers to determine how water withdrawals or other hydrologic or land use changes in watersheds may affect Great Lakes ecosystems. This project is determining fish distributions in Great Lakes tributaries and how changes in stream flow may affect them. This information will help guide restoration efforts to achieve maximum effectiveness and success. Estimates were produced using WATER - a TOPMODEL based tool that estimates streamflow at any point along the stream network. The pour point is selected using a point-and-click GUI that samples information about the basin using a geodatabase of topographic and soil data spatial layers.

Categories: Project; Tags: GLRI, Great Lakes, Great Lakes Restoration Initiative, Great Lakes Restoration Initiative, Lake, All tags... Lake, Lake:Lake Michigan, Nearshore Health, TOPMODEL, Template 134, WATER, forecast, simulation, soils, streamflow, Fewer tags

SPARROW cover crop model coefficients, summary statistics, inputs and simulated total phosphorus loads in streams of the Midwest United States, 2012 Base Year

The U.S. Geological Survey’s (USGS) SPAtially Referenced Regression On Watershed attributes (SPARROW) model was used to aid in the interpretation of monitoring data and simulate nutrient loads in streams across the Midwest Region of the United States. SPARROW is a hybrid empirical/process-based mass balance model that can be used to estimate the major sources and environmental factors that affect the long-term supply, transport, and fate of contaminants in streams. The spatially explicit model structure is defined by a river reach network coupled with contributing catchments. The model is calibrated by statistically relating watershed sources and transport-related properties to monitoring-based water-quality load...

Tags: Alabama, Arkansas, Colorado, Georgia, Illinois, All tags... Indiana, Iowa, Kansas, Kentucky, Louisiana, Maryland, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, New Mexico, New York, North Dakota, Ohio, Oklahoma, Pennsylvania, South Dakota, Tennessee, Texas, USGS Science Data Catalog (SDC), Virginia, Water Quality, West Virginia, Wisconsin, Wyoming, nutrient content (water), river systems, Fewer tags

GLM calibration inputs and outputs