Filters: Tags: Upper Mississippi River Basin (X)4 results (95ms)
This product consists of one tabular dataset and associated metadata of water quality information related to rivers, streams, and reservoirs in the Upper Mississippi River watershed between 2012 and 2016. This data release is a part of a national assessment of freshwater aquatic carbon fluxes. Data consist of organic and inorganic carbon related species, carbon dioxide and methane gas fluxes calculated from manual chamber measurements, nitrogen species, carbon isotopes, oxygen isotopes, cations, anions, trace metals, and various in situ measurements including: pH, water temperature, air temperature, barometric pressure, dissolved oxygen, turbidity, fluorescent dissolved organic matter, and specific conductance....
Categories: Data, Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Carbon, Fluorescent Dissolved Organic Matter (fDOM), Minnesota, Shingobee, Shingobee Headwaters Aquatic Ecosystems Project,
Adequate knowledge on the movement of nutrients under various agricultural practices is essential for developing remedial measures to reduce nonpoint source pollution. Mathematical models, after extensive calibration and validation, are useful to derive such knowledge and to identify site-specific alternative agricultural management practices. A spatial-process model that uses GIS and ADAPT, a field scale daily time-step continuous water table management model, was calibrated and validated for flow and nitrate-N discharges from a 365 ha agricultural watershed in central Iowa, in the Midwestern United States. This watershed was monitored for nitrate-N losses from 1991 to 1997. Spatial patterns in crops, topography,...
Categories: Publication; Types: Citation; Tags: Data Visualization & Tools, Fertilizer rate, Landscapes, Northeast CASC, Other Landscapes,
Inland wetlands produce, biogeochemically process and sequester carbon. Wetlands that are hydrologically connected to stream and river networks are commonly considered to be major sources of carbon that may be biologically or photochemically processed in-stream, or exported to coastal regions. However, very little is known about the potential or actual lateral carbon fluxes from different major wetland types, or the downstream fate of that carbon (rapid decomposition vs. sequestration vs. export). Major questions: What is the variability in potential carbon sources (as dissolved organic C, dissolved inorganic C, CO2 and CH4) from major inland wetland types to inland waters? What metrics and/or markers (chemical,...
Categories: Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Aquatic carbon, Carbon dynamics, Land Cover/Land Use, Southern Rocky Mountains, Staging,
The Upper Mississippi River Restoration-Environmental Management Program (UMRR-EMP) partnered with the U.S. Fish and Wildlife Service (USFWS) Region 3 to collect 2011 digital color infrared (CIR) aerial photography of Pools 14 - Open River South, Mississippi River and Pools Dresden - Lockport, Illinois River at 16”/pixel using a mapping-grade Applanix DSS439 digital aerial camera. The photography shall be at a minimum accuracy of 5-10 meters and allow for the development of orthorectified photo mosaics by U.S. Geological Survey – Upper Midwest Environmental Sciences Center (USGS-UMESC) for all or portions of the coverage area. The flights occurred during times of peak vegetation biomass, typically from late August...