scholarly journals Characterization of rainfall-runoff response and estimation of the effect of wetland restoration on runoff, Heron Lake Basin, southwestern Minnesota, 1991-97

2000 ◽  
Keyword(s):  
Wetland Restoration ◽  
Lake Basin ◽  
Rainfall Runoff

Quantitative characterization of subaqueous landslides in Lake Zurich (Switzerland) based on a high-resolution bathymetric dataset

2018 ◽  
Vol 477 (1) ◽  
pp. 399-412 ◽  
Author(s):  
M. Strupler ◽  
F. S. Anselmetti ◽  
M. Hilbe ◽  
M. Strasser
Keyword(s):  
High Resolution ◽  
Lake Basin ◽  
Mass Movements ◽  
Mass Wasting ◽  
Morphometric Analyses ◽  
Position Index ◽  
Lake Zürich ◽  
Lake Floor ◽  
The Individual

AbstractNew high-resolution surveying techniques allow subaqueous geomorphology to be investigated in great detail. Such analyses are important as the morphologies are often indicative of past processes, including mass movements. For peri-alpine Lake Zurich, many mass-wasting events have occurred in the past millennia. While the ages of these events are known from past studies on the respective deposits in the lake basin, the surface expressions and distribution of the respective features on the slopes have not been extensively described. Here we quantitatively characterize the morphologic features on the entire lake floor. A total of 50 subaqueous landslides are morphologically identified in a high-resolution digital bathymetric model (DBM), mapped and characterized using a geographic information system (GIS). Many slides show relatively small erosion areas (<0.05 km2) and are located in shallow water (<10 m water depth). The roughness of the individual landslide-translation areas is quantified using the standard deviation of a measure called bathymetric position index (BPI) and related to the slides ages. The DBM allows the detection of traces of mass-movements dating back to c. 5000 cal years BP. Our results demonstrate that morphometric analyses on a high-resolution DBM can contribute to a better understanding of sublacustrine mass movements.

scholarly journals Characterization of Springtime Coliform Populations at the End Creek Wetland Restoration (Union Co., Oregon, USA): A Three-Year Study

2015 ◽  
Vol 06 (08) ◽  
pp. 482-490
Author(s):  
Joseph A. Corsini ◽  
Larry Rob Peters ◽  
Brian Tarpy ◽  
Chung Pak ◽  
Karen Antell
Keyword(s):  
Wetland Restoration

scholarly journals Fault-dominated deformation in an ice dam during annual filling and drainage of a marginal lake

2005 ◽  
Vol 40 ◽  
pp. 174-178 ◽  
Author(s):  
Joseph S. Walder ◽  
Dennis C. Trabant ◽  
Michelle Cunico ◽  
Suzanne P. Anderson ◽  
Robert S. Anderson ◽  
...  
Keyword(s):  
Lake Level ◽  
Lake Basin ◽  
Uplift Rate ◽  
Steep Gradient ◽  
Surface Uplift ◽  
Entire Thickness ◽  
Dam Deformation ◽  
Normal Sense ◽  
Deformation Surface

AbstractIce-dammed Hidden Creek Lake, Alaska, USA, outbursts annually in about 2–3 days. As the lake fills, a wedge of water penetrates beneath the glacier, and the surface of this ‘ice dam’ rises; the surface then falls as the lake drains. Detailed optical surveying of the glacier near the lake allows characterization of ice-dam deformation. Surface uplift rate is close to the rate of lake-level rise within about 400 m of the lake, then decreases by 90% over about 100 m. Such a steep gradient in uplift rate cannot be explained in terms of ice-dam flexure. Moreover, survey targets spanning the zone of steep uplift gradient move relative to one another in a nearly reversible fashion as the lake fills and drains. Evidently, the zone of steep uplift gradient is a fault zone, with the faults penetrating the entire thickness of the ice dam. Fault motion is in a reverse sense as the lake fills, but in a normal sense as the lake drains. As the overall fault pattern is the same from year to year, even though ice is lost by calving, the faults must be regularly regenerated, probably by linkage of surface and bottom crevasses as ice is advected toward the lake basin.

Characterization of the carbon fluxes of a vegetated drained lake basin chronosequence on the Alaskan Arctic Coastal Plain

2009 ◽  
Vol 16 (6) ◽  
pp. 1870-1882 ◽  
Author(s):  
D. ZONA ◽  
W. C. OECHEL ◽  
K. M. PETERSON ◽  
R. J. CLEMENTS ◽  
K. T. PAW U ◽  
...  
Keyword(s):  
Coastal Plain ◽  
Carbon Fluxes ◽  
Lake Basin ◽  
Arctic Coastal Plain ◽  
Alaskan Arctic

Rainfall-runoff modeling: flow characterization of Hammam Melouane Wadi Algeria

2019 ◽  
Vol 12 (15) ◽  
Author(s):  
Abdelhakim Belaroui ◽  
Fatima Zohra Haouchine ◽  
Abdelhamid Haouchine
Keyword(s):  
Rainfall Runoff ◽  
Flow Characterization ◽  
Runoff Modeling ◽  
Modeling Flow

scholarly journals Modified NRCS-CN-TUH methods for distributed rainfall-runoff modeling

RBRH ◽  
2019 ◽  
Vol 24 ◽  
Author(s):  
Fagner França da Costa ◽  
Adriano Rolim da Paz ◽  
Daniel Gustavo Allasia Piccilli
Keyword(s):  
Rainfall Runoff ◽  
Runoff Generation ◽  
Porto Alegre ◽  
Rainfall Events ◽  
Time To Peak ◽  
Runoff Modeling ◽  
Catchment Areas ◽  
Facilities Design ◽  
The One

ABSTRACT Due to the relative ease of application, the CN and the Triangular Unit Hydrograph (TUH) methods are commonly used in hydraulic facilities design. This work adapts these methods to incorporate the spatial variability of the physical characteristics of the catchment. The flow travel time (tv) is computed from the DEM and the CN and TUH methods are adapted to produce results on a pixel basis. This methodology is applied to the Cascata I catchment (Porto Alegre - RS), considering two variants: i) TUHout - tv calculated from each pixel up to the catchment outlet; ii) TUHdown - tv computed from one pixel to the immediate downstream. The proposed methodology showed potential to be used for hydrologic modeling of rainfall events in small catchments, as an alternative for providing information useful for urban drainage management, as the characterization of catchment areas with distinct behavior regarding velocities and potential for runoff generation. On the other side, the results showed an underestimation of peak discharges and time to peak. Initial abstraction losses of the CN method lower than the one originally prescribed provided more realistic results, in agreement to recent studies. There is the need for an improvement of the methodology for the characteristics of the Brazilian catchments besides the simple adaptation of the classical equations of the CN method to its distributed form.

scholarly journals Demographic and genetic characterization of harvested Corbicula fluminea populations

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e9657
Author(s):  
Weikai Wang ◽  
Xiongjun Liu ◽  
Noé Ferreira-Rodríguez ◽  
Weiwei Sun ◽  
Yanli Wu ◽  
...  
Keyword(s):  
Economic Value ◽  
Corbicula Fluminea ◽  
Lake Basin ◽  
Peripheral Populations ◽  
Freshwater Bivalve ◽  
Genetic Changes ◽  
Commercial Harvest ◽  
Aquaculture Production ◽  
Harvest Pressure

The freshwater clam Corbicula fluminea s.l. is an edible freshwater bivalve of economic value in Asia. The species has been particularly well studied in the invaded range. However, there is a lack of knowledge in its native range where it supports an increasing commercial harvest pressure. Among Asiatic countries, China accounts for 70% of known commercial harvest and aquaculture production. We aim to characterize here wild C. fluminea s.l populations exposed to commercial harvest pressure in Poyang Lake Basin. We found higher biomass, density and genetic diversity in lake populations compared to peripheral populations (i.e., lake tributaries). Given that lake habitats support more intense harvest pressure than peripheral habitats, we suggest that demographic and genetic differentiation among subpopulations may be influenced in some degree by different harvest pressure. In this regard, additional demographic and/or genetic changes related to increasing harvest pressure may place population at a higher risk of extirpation. Altogether, these results are especially relevant for maintaining populations at or above viable levels and must be considered in order to ensure the sustainability of the resource.

scholarly journals Application of HEC-HMS Model to Assess Streamflow and Water Resources Availability in Stung Sangker Catchment of Mekong’ Tonle Sap Lake Basin in Cambodia

2016 ◽  
Author(s):  
Kimhuy Sok ◽  
Chantha Oeurng
Keyword(s):  
Water Resources ◽  
Model Performance ◽  
Model Fit ◽  
Lake Basin ◽  
Rainfall Runoff ◽  
Water Insecurity ◽  
Monthly Basis ◽  
Tonle Sap Lake ◽  
Tonle Sap ◽  
River Catchments

Hydrologic studies on rainfall-runoff have been extensively conducted in many regions around the globe to fulfill various desirable needs with a purpose of effective and proper planning and managing water resources for present and future uses, whereas such study is not well drawn much attention to river catchments of Tonle Sap Lake Basin in Cambodia, which may prevail to water insecurity. The Stung Sreng catchment, which is one among them considered to be a significant basin for water resources management in Cambodia, is remarkably increasing under intolerable pressures in water resources development. This study was to apply HEC-HMS (Hydrological Engineering Center-Hydrological Model System) model to predict streamflow of Stung Sangker catchment, located in Tonlesap Lake Basin in Cambodia. The result showed that the calibration was good at monthly basis. The model performance was given by Nash-Sutcliffe Efficiency criteria followed by 0.44 for daily and 0.71 for monthly basis, respectively. Moreover, the Percent Bias (PBIAS) for daily and monthly simulation was 4.13% and 3.56%, indicating a satisfactory model fit. The HEC-HMS conceptual model can be used to simulate flow of Stung Sangke catchment on a continuous time scale particularly monthly basis. The result also indicated that there was a clear seasonal variation in monthly water availability, especially during both wet and dry season.

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