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Description of Work Since 2010, connecting channels have been included in each of the Great Lakes’ Lake Management Plans (LaMPs). Lake Ontario now includes both the Niagara River and the St. Lawrence River. The Niagara River is well characterized by a number of long-term programs, but because of the lack of tributary water-quality data, the St. Lawrence River and its tributaries constitute a data gap in the information needed for the Lake Ontario to fulfill its goals. Critical information needs, including basic water-quality parameters, total suspended solids, nutrients and flow data. These data are needed to aid in the identification of sources of nutrient and sediment loading to the St. Lawrence. The monitoring...
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This data release consist of the annual sediment depositional volume at five floodplain and five point bar sites on Powder River in southeastern Montana from 1979 through 2017. These 10 sites are a subgroup of a larger group of cross-sections established in 1975 and 1977 to monitor the channel changes along a 90-kilometer reach of Powder River. In addition to the sediment deposition data, characteristic of the annual peak flood are listed. The data are in 1 Excel files containing worksheets (10) corresponding to each channel cross-section .
The spatial variability of two fundamental morphological variables is investigated for rivers having a wide range of discharge (five orders of magnitude). The variables, water-surface width and average depth, were measured at 58 to 888 equally spaced cross-sections in channel links (river reaches between major tributaries). These measurements provide data to characterize the two-dimensional structure of a channel link which is the fundamental unit of a channel network.The morphological variables have nearly log-normal probability distributions. A general relation was determined which relates the means of the log-transformed variables to the logarithm of discharge similar to previously published downstream hydraulic...
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Description of Work USGS scientists provide expertise, capacity and support for the implementation of Lakewide Management Plans (LaMPs) and the associated goals, objectives and targets for each of the Great Lakes, including Lake Superior. The LaMPs are critical binational groups that are important for promoting Great Lakes restoration. Specifically, LaMP efforts include compiling monitoring and research information into the Great Lakes web mapper (SiGL Mapper). The Mapper’s focus is on information that will result in recognition of areas where data are being collected, missing or sparse, and on areas where ecosystems are vulnerable.
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Description of Work Predictive models have been used at beaches to improve the timeliness and accuracy of recreational water-quality assessments over the most common current approach to water-quality monitoring, which relies on culturing fecal-indicator bacteria such as Escherichia coli (E. coli.)
The spatial variability of two fundamental morphological variables is investigated for rivers having a wide range of discharge (five orders of magnitude). The variables, water-surface width and average depth, were measured at 58 to 888 equally spaced cross-sections in channel links (river reaches between major tributaries). These measurements provide data to characterize the two-dimensional structure of a channel link which is the fundamental unit of a channel network.The morphological variables have nearly log-normal probability distributions. A general relation was determined which relates the means of the log-transformed variables to the logarithm of discharge similar to previously published downstream hydraulic...
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Under the direction of some of the leading American scientists of the 19th century, the United States Coast Survey (USCS) created exceptionally accurate and detailed maps of the country's coastline. These surveys (commonly referred to as "T-sheets") are the single most important data source for understanding the physical and ecological characteristics of the US shoreline prior to substantial Euro-American modification. Their depictions of coastal wetlands and estuaries prior to major development are valuable tools for coastal zone planning and estuary management and form an important foundation for more detailed investigations of historical extent and condition of coastal wetlands.Please visit http://www.caltsheets.org...
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Stream reaches and associated attributes derived from 10m DEMS using programs bld_grds and netrace, provided by Earth Systems Institute for the Western Oregon Plan Revision (WOPR).BLM (Bureau of Land Management) WOPR (Western Oregon Plan Revision) PRMP (Proposed Resource Management Plan) Channel locations and geomorphic attributes extraced using algorithms described in Clarke, S. E., K. M. Burnett, and D. J. Miller. 2008, Modeling streams and hydrogeomorphic attributes in Oregon from digital and field data. Journal of the American Water Resources Association 44(2): 20. Habitat intrinsic potential calculated using algorithms described in Burnett, K. M., G. H. Reeves, D. J. Miller, S. Clarke, K. Vance-Borland, and...
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This dataset is used for cartographic representation of "double-line" streams where braided watercourses, wide channels and multi-channels occur on stream/river systems. This particular version of the dataset was developed to submit to the National Hydrography Dataset (NHD) As the SEAK Hydro database evolves, so to will the metadata for this dataset. Until noted otherwise, please reference this metadata for an older version of the source data. This dataset provides cartographic representation of "wide" linear water features of the Tongass National Forest in Southeast Alaska with the inclusion of some features from state and private lands.
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Valley Segment Ecological Classification (VSEC). An ecological river classification involves the identification of structurally homogeneous spatial units which emerge along the channel network as a result of catchement processes interacting with local physiographic features. Observations of Michigan rivers suggest that the natural ecological unit, as defined by the spatial scales of riverine physical and biological porcesses, is most closely approximated by the physical channel unti termed the valley segment. Valley segments are generally quite large, characterized by relative homogeneity in hydrologic, limnologic, channel morphology, and riparian dynamics. Valley segment characteristics often change sharply at...
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Description of Work The Great Lakes ecosystem has undergone major changes over the last two decades related to the invasion of Dreissenid mussels, increased water clarity, increased benthic algae and associated water quality problems. For reasons not yet entirely understood, and that have bi-national significance, water column total phosphorus has not significantly increased over the last decade but the relative percent of the more biologically available dissolved phosphorus has increased. The filtering action of Dreissenid mussels has been shown to increase concentrations of dissolved phosphorus in the water column immediately above mussel beds and this had been hypothesized as one explanation for the increase...
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This data release consist of 40 channel cross sections of Powder River measured from 1975 through 2018 along a 90-kilometer reach from Moorhead to Broadus, Montana. Most channel cross sections were measured annually from 1975 through 1998, intermittently from 1999 through 2012, and then annually from 2013 through 2018. In 1978, after all cross sections had been established, there was a extreme flood with an approximate 50-year recurrence interval. Thus, the data represent the short- and long-term response to an extreme flood. The data are in 40 Excel files (one file for each channel cross section) containing worksheets corresponding to each channel cross-section survey (from 2 to about 42). Worksheets contain...


    map background search result map search result map WOPR Channel Reaches Arc Southeast Alaska Double Line Streams Lake Michigan basin, USA: Valley Segment Ecological Classification (VSEC) Lakewide Management Plan Capacity Support by U.S. Geological Survey - LAKE SUPERIOR Understanding Nutrient Loading Impacts on Lake Ontario Nearshore Waters at the Niagara River Connecting Channel Developing and Implementing Predictive Models for Estimating Recreational Water Quality at Great Lakes Beaches in new York State Historical Wetlands of the Southern California Coast Channel Cross-section Data for Powder River between Moorhead and Broadus, Montana from 1975 to 2018 (ver. 2.0, November 2018) Sediment Deposition on Floodplains and Point Bars of Powder River in Southeastern Montana from 1979 through 2017 Channel Cross-section Data for Powder River between Moorhead and Broadus, Montana from 1975 to 2018 (ver. 2.0, November 2018) Sediment Deposition on Floodplains and Point Bars of Powder River in Southeastern Montana from 1979 through 2017 Historical Wetlands of the Southern California Coast WOPR Channel Reaches Arc Understanding Nutrient Loading Impacts on Lake Ontario Nearshore Waters at the Niagara River Connecting Channel Developing and Implementing Predictive Models for Estimating Recreational Water Quality at Great Lakes Beaches in new York State Lake Michigan basin, USA: Valley Segment Ecological Classification (VSEC) Lakewide Management Plan Capacity Support by U.S. Geological Survey - LAKE SUPERIOR Southeast Alaska Double Line Streams