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LTRM Water Quality Sampling Strata The data set includes delineation of sampling strata for the six study reaches of the UMRR Program’s LTRM element. Separate strata coverages exist for each of the three monitoring components (fish, vegetation, and water quality) to meet the differing sampling needs among components. Generally, the sampling strata consist of main channel, side channel, backwater, and impounded areas. The fish component further delineates a “shoreline” portion of the strata to be used for sampling gears deployed only along the shoreline. The data are raster in origin, with the center of each pixel representing the sampling location. Cell size is typically 50 meters, although several water quality strata are at 200 meter cell size. Categories: Data, Publication; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: Mississippi River, Navgation Pool 13, Upper Mississippi River, aquatic areas, sampling strata Modeling fingernail clam (Family: Sphaeriidae) abundance-habitat associations at two spatial scales using hierarchical count models Categories: Publication; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service Hydrologic modification for habitat improvement in the Finger Lakes: Pre-Project Report Number 2, 1993 The Finger Lakes Habitat Rehabilitation and Enhancement Project(HREP) is intended to improve winter habitat conditions for fish in a series of interconnected backwater lakes of the Mississippi River near Alma, Wisconsin. Winter habitat requirements (temperature, flow velocity, and dissolved oxygen) for the target fish population in the Finger Lakes have been defined and limnologcal efforts have been aimed at quantifying the spatial-temporal patterns and interrelationships among water movement, oxygen, and temperature. The progress to date (pre-construction) has included detailed investigations into (1) system hydrology (including dye-tracer studies), (2) oxygen supply and depletion, (3) temperature regime, (4) aquatic... Categories: Publication; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service Surficial sediment characteristics in Pools 4 and 8, Upper Mississippi River Moisture content, bulk density, and organic content of surficial sediments were estimated with a penetrometer in Navigation Pools 4 and 8 of the Upper Mississippi River during 1994 and 1995. Mean moisture content of sediment was low in both Pool 4 (39%, SD = 15.0%) and Pool 8 (34%, SD = 13.7%), suggesting that soft, fine sediments are uncommon in these pools. Sediment in much of the off-channel habitat was found to have similarly low moisture content. Sediment in small backwaters was particularly low in moisture content, although areas with sediment moisture content greater than 70% were found in small backwaters. Sediment in the large backwaters of Pool 4 was similar to sediment in the small backwaters of Pools... Categories: Publication; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service Rates and patterns of net sedimentation in backwaters of Pools 4, 8, and 13 of the Upper Mississippi River Net sedimentation rates were obtained for backwaters of the Upper Mississippi River in Pools 4, 8, and 13 by measuring annual bed elevation changes along transects between 1997 and 2001. Average sedimentation rates (cmּyr�1) during the 5-yr period were lower than most previously reported rates in backwaters of the River, with means of –0.08 (standard error [SE] = 0.18) in Pool 4, 0.21 (SE = 0.10) in Pool 8, and 0.47 (SE = 0.26) in Pool 13.�Poolwide estimated mean sedimentation rates in the terrestrial areas adjacent to backwaters appeared higher, ranging from 0.32 (SE = 0.14) to 0.78 (SE = 0.25) cmּyr�1, but were not significantly different than rates in aquatic areas.�When averaged over the study period, sedimentation... Categories: Publication; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service Pool 25: Water level management alternatives and their effects on habitat The effects of changing levee and water level management practices on present habitat types and amounts on the Upper Mississippi River floodplain at Pool 25 were predicted. The intent of the study was to investigate a broad range of plans that would provide coarse resolution information and the tools needed to study specific plans in the future. Two conditions were investigated for levees: the present levee system and all levees removed. Five water level management plans were studied: the present plan, two plans that would increase water levels, and two plans that would decrease water levels. The levee and water level management variables resulted in a total of ten unique management alternatives. Each was studied... Categories: Publication; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service Pool 13 drawdown: Predicting success rates and affected areas The likelihood of 1- or 2-foot drawdowns, and the area affected by such alternative drawdowns, was estimated for Pool 13 on the Upper Mississippi River. Minimum water surface (elevation) requirements were compared to computed water surface profiles to determine a critical low flow that would allow a navigation channel 400 feet wide and 10.5 feet deep. An upper limit on flow was established based on the flow at which open river conditions would exist for a given drawdown. The range in flows that would allow for a drawdown was used to estimate success rates using historical daily discharge data. Success rates were determined for a variety of drawdown durations between two time periods, May 1 August 15 and June 15... Categories: Publication; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service LTRM Fish Sampling Strata The data set includes delineation of sampling strata for the six study reaches of the UMRR Program’s LTRM element. Separate strata coverages exist for each of the three monitoring components (fish, vegetation, and water quality) to meet the differing sampling needs among components. Generally, the sampling strata consist of main channel, side channel, backwater, and impounded areas. The fish component further delineates a “shoreline” portion of the strata to be used for sampling gears deployed only along the shoreline. The data are raster in origin, with the center of each pixel representing the sampling location. Cell size is typically 50 meters, although several water quality strata are at 200 meter cell size. Categories: Data, Publication; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: Mississippi River, Navgation Pool 13, Navigation Pool 26, Upper Mississippi River, aquatic areas, All tags... sampling strata, Fewer tags Backwater Sedimentation in Navigation Pools 4 and 8 of the Upper Mississippi River data Transects in backwaters of Navigation Pools 4 and 8 of the Upper Mississippi River (UMR) were established in 1997 to measure sedimentation rates. Annual surveys were conducted from 1997-2002 and then some transects surveyed again in 2017-18. Changes and patterns observed were reported on in 2003 for the 1997-2002 data, and a report summarizing changes and patterns from 1997-2017 will be reported on at this time. Several variables are recorded each survey year and placed into an Excel spreadsheet. The spreadsheets are read with a SAS program to generate a SAS dataset used in SAS programs to determine rates, depth loss, and associations between depth and change through regression. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Erosion, Mississippi River, Navigational Pool, Sedimentation, USGS Science Data Catalog (SDC), All tags... Upper Mississippi River, biota, none, Fewer tags Response of vegetation and fish during an experimental drawdown in three pools, Upper Mississippi River An experiment to improve ecological conditions while maintaining a 9-foot (2.74-m) navigation channel was continued in 1995 and 1996 on the three pools of the Upper Mississippi River managed by the St. Louis District, U.S. Army Corps of Engineers. Water levels were held from 1 to 3 feet (0.3 to 0.9 m) lower than maximum regulated elevations at the dam from about mid-June through July in Pools 24 and 25 and Melvin Price Pool. Water levels were then gradually raised as discharge allowed. Vegetation was surveyed along an elevational gradient in eight areas in 1995 and six areas in 1996. Seven plant genera were identified in 1995 and five genera in 1996. Amaranthus spp. (pigweed), Cyperus spp. (chufa), Echinochloa spp.... Categories: Publication; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service Summary of monitoring findings for Fiscal Year 2004: Long Term Resource Monitoring Program of the Upper Mississippi River System The Long Term Resource Monitoring Program (LTRMP), a component of the Environmental Management Program for the Upper Mississippi River System (UMRS), is administered by the U.S. Geological Survey’s Upper Midwest Environmental Sciences Center (UMESC) in La Crosse, Wisconsin. The LTRMP supports six field stations operated by state agencies in Illinois, Iowa, Minnesota, Missouri, and Wisconsin (Figure 1) to collect most of the monitoring data. Information on important ecosystem components, including water quality, fish, vegetation, and macroinvertebrates are obtained annually using standardized procedures. Other data such as land cover/land use and bathymetry are gathered and analyzed periodically. Monitoring activities... Categories: Publication; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service Pool 25: Land Ownership Requirements in Moving the Control Point to the Dam We estimated the amount of land that would have to be acquired if an alternative water-level management plan was used for Pool 25 on the Upper Mississippi River. The work was performed as part of a study to evaluate water regulation alternatives that could minimize negative impacts and increase ecological benefits of dam operation. We used a one-dimensional model (HEC-2) to estimate the ordinary high-water profile and water surfaces at various discharges and management options, by river mile. Maps of these data were then created with a geographic information system, along with maps of land elevations, both above and below the surface of the river, lands controlled by the managing agency, and levees. The ownership... Categories: Publication; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service Summary of monitoring findings for Fiscal Year 2002: Long Term Resource Monitoring Program of the Upper Mississippi River System This report summarizes monitoring activities of the Long Term Resources Monitoring Program (LTRMP) during 2002 and highlights selected results and accomplishments pertaining to hydrology, sedimentation, bathymetry, land cover/land use, water quality, fish, vegetation, and macroinvertebrates.� Categories: Publication; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service LTRM Vegetation Sampling Strata The data set includes delineation of sampling strata for the six study reaches of the UMRR Program’s LTRM element. Separate strata coverages exist for each of the three monitoring components (fish, vegetation, and water quality) to meet the differing sampling needs among components. Generally, the sampling strata consist of main channel, side channel, backwater, and impounded areas. The fish component further delineates a “shoreline” portion of the strata to be used for sampling gears deployed only along the shoreline. The data are raster in origin, with the center of each pixel representing the sampling location. Cell size is typically 50 meters, although several water quality strata are at 200 meter cell size. Categories: Data, Publication; Types: Citation, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: Mississippi River, Navigation Pool 8, Upper Mississippi River, aquatic areas, sampling strata Habitat changes in the Upper Mississippi River floodplain The floodplain of the Upper Mississippi River has been significantly modified by man since 1824. Changes include the removal snags and sandbars, elimination of rapids, closing of side channels, construction of wing dams, 29 navigation locks and dams, and hundreds of miles of levees. Watershed changes have transformed much of the landscape from forest/grassland habitats to agriculture. We studied floodplain changes by analyzing historical water elevation and discharge data collected since 1861 and spatial data since 1891. Open water and marsh habitats have generally increased in the dammed portion of the river. A 28% reduction in open water and a 38% reduction in woody and terrestrial habitats have occurred In areas... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service Cumulative effects of restoration efforts on ecological characteristics of an open water region within the Upper Mississippi River Categories: Publication; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service Mapped differences in weighted wind fetch distances within the Upper Mississippi River System between 1989 and 2000 Wind fetch is defined as the unobstructed distance that wind can travel over water in a constant direction. Fetch is an important characteristic of open water because longer fetch can result in larger wind-generated waves. The larger waves, in turn, can increase shoreline erosion and sediment re-suspension. Wind fetches were calculated using the wind fetch model available from (http://www.umesc.usgs.gov/management/dss/wind_fetch_wave_models_2012update.html) for aquatic areas within the Upper Mississippi River System. This toolbox calculates effective wind fetch using the recommended procedure of the Shore Protection Manual (USACE 1984). A baseline conditions assessment of wind fetch was conducted to assist the... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Raster; Tags: Illinois, Iowa, Minnesota, Missouri, USGS-CC Upper Mississippi River, All tags... Upper Mississippi, Wind Fetch, Wisconsin, wind, Fewer tags Rates of sedimentation along selected backwater transects in Pools 4, 8, and 13 of the Upper Mississippi River Net rates of sediment accumulation were measured as changes in bed elevation along selected backwater transects during several time intervals between 1989 and 1996. The average net rate of accumulation was found to be lower than previously reported for the Upper Mississippi River. Mean rates (in centimeters per year) the transects surveyed were 0.29 for Pool 4, 0.12 for Pool 8, and 0.80 for Pool 13. Rates were highly variable among transects with standard deviations (in centimeters per year) of 1.14 in Pool 4, 0.55 in Pool 8, and 1.45 in Pool 13. All three study pools had transects with net erosion and transects with net sedimentation. Accumulation rates were variable along transects as well, with most transects... Categories: Publication; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service