Scenarios for Restoring Floodplain Ecology Given Changes to River Flows Under Climate Change: Case from the San Joaquin River, California

2014 ◽  
Vol 31 (3) ◽  
pp. 280-290 ◽  
Author(s):  
M. K. Matella ◽  
A. M. Merenlender
Keyword(s):  
Climate Change ◽  
River Flows ◽  
Floodplain Ecology ◽  
San Joaquin River

scholarly journals Hydrologic sensitivity of the Upper San Joaquin River Watershed in California to climate change scenarios

2012 ◽  
Vol 44 (4) ◽  
pp. 723-736 ◽  
Author(s):  
Zili He ◽  
Zhi Wang ◽  
C. John Suen ◽  
Xiaoyi Ma
Keyword(s):  
Climate Change ◽  
Sierra Nevada ◽  
Climate Change Scenarios ◽  
Intergovernmental Panel ◽  
Hydrological Simulation ◽  
River Watershed ◽  
System Sensitivity ◽  
Hspf Model ◽  
San Joaquin River ◽  
San Joaquin River Watershed

To examine the hydrological system sensitivity of the southern Sierra Nevada Mountains of California to climate change scenarios (CCS), five headwater basins in the snow-dominated Upper San Joaquin River Watershed (USJRW) were selected for hydrologic simulations using the Hydrological Simulation Program-Fortran (HSPF) model. A pre-specified set of CCS as projected by the Intergovernmental Panel on Climate Change (IPCC) were adopted as inputs for the hydrologic analysis. These scenarios include temperature increases between 1.5 and 4.5 °C and precipitation variation between 80 and 120% of the baseline conditions. The HSPF model was calibrated and validated with measured historical data. It was then used to simulate the hydrologic responses of the watershed to the projected CCS. Results indicate that the streamflow of USJRW is sensitive to the projected climate change. The total volume of annual streamflow would vary between −41 and +16% compared to the baseline years (1970–1990). Even if the precipitation remains unchanged, the total annual flow would still decrease by 8–23% due to temperature increases. A larger portion of the streamflow would occur earlier in the water year by 15–46 days due to the temperature increases, causing higher seasonal variability of streamflow.

Hydrological modelling and anthropogenic water use

2021 ◽  
Author(s):  
Ponnambalam Rameshwaran ◽  
Ali Rudd ◽  
Vicky Bell ◽  
Matt Brown ◽  
Helen Davies ◽  
...  
Keyword(s):  
Climate Change ◽  
Water Use ◽  
Hydrological Model ◽  
Model Performance ◽  
River Flows ◽  
Discharge Data ◽  
New Approach ◽  
Water Demands ◽  
The Impact ◽  
Grid Based

<p>Despite Britain’s often-rainy maritime climate, anthropogenic water demands have a significant impact on river flows, particularly during dry summers. In future years, projected population growth and climate change are likely to increase the demand for water and lead to greater pressures on available freshwater resources.</p><p>Across England, abstraction (from groundwater, surface water or tidal sources) and discharge data along with ‘Hands off Flow’ conditions are available for thousands of individual locations; each with a licence for use, an amount, an indication of when abstraction can take place, and the actual amount of water abstracted (generally less than the licence amount). Here we demonstrate how these data can be used in combination to incorporate anthropogenic artificial influences into a grid-based hydrological model. Model simulations of both high and low river flows are generally improved when abstractions and discharges are included, though for some catchments model performance decreases. The new approach provides a methodological baseline for further work investigating the impact of anthropogenic water use and projected climate change on future river flows.</p>

scholarly journals Assessing Climate Change Impacts on River Flows in the Tonle Sap Lake Basin, Cambodia

Water ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 618 ◽  
Author(s):  
Chantha Oeurng ◽  
Thomas Cochrane ◽  
Sarit Chung ◽  
Mathias Kondolf ◽  
Thanapon Piman ◽  
...  
Keyword(s):  
Climate Change ◽  
General Circulation ◽  
Rapid Development ◽  
Dry Season ◽  
Freshwater Ecosystem ◽  
Lake Basin ◽  
River Flows ◽  
Water Flows ◽  
Tonle Sap Lake ◽  
Tonle Sap

The Tonle Sap is the most fertile and diverse freshwater ecosystem in Southeast Asia, receiving nurturing water flows from the Mekong and its immediate basin. In addition to rapid development in the Tonle Sap basin, climate change may threaten natural flow patterns that sustain its diversity. The impacts of climate change on river flows in 11 sub-basins contributing to the Tonle Sap Lake were assessed using the Soil and Water Assessment Tool (SWAT) model to quantify the potential magnitude of future hydrological alterations. Projected river flows from three General Circulation Models (GFDL-CM3, GISS-E2-R-CC and IPSL-CM5A-MR) for three time horizons (2030s, 2060s and 2090s) indicate a likely decrease in both the wet and dry season flows. The mean annual projected flow reductions range from 9 to 29%, 10 to 35% and 7 to 41% for the 2030s, 2060s and 2090s projections, respectively. Moreover, a decrease in extreme river flows (Q5 and Q95) was also found, which implies there could be a decline in flood magnitudes and an increase in drought occurrences throughout the basin. The results of this study provide insight for water resources planning and adaptation strategies for the river ecosystems during the dry season, when water flows are projected to decrease.

scholarly journals Small farm dams: impact on river flows and sustainability in a context of climate change

2014 ◽  
Vol 18 (10) ◽  
pp. 4207-4222 ◽  
Author(s):  
F. Habets ◽  
E. Philippe ◽  
E. Martin ◽  
C. H. David ◽  
F. Leseur
Keyword(s):  
Climate Change ◽  
River Flow ◽  
Small Farm ◽  
River Flows ◽  
Entire Country ◽  
North Western ◽  
Insight Into ◽  
Low Precipitation ◽  
Hydrometeorological Conditions ◽  
Small Basin

Abstract. The repetition of droughts in France has led to a growing demand for irrigation water and consequently to an increase in requests for the construction of small farm dams. Although such dams are small, their accumulation in a basin affects river flows, because the water collected in these small farm dams is used for irrigation and thus does not contribute to river flow. In order to gain more insight into their impact on the annual and monthly discharges, especially during dry years, a small farm dam model was built and connected to a hydrometeorological model. Several scenarios with different volume capacities, filling catchment sizes and filling periods were tested for such dams. The results were analysed in a small basin in western France, where the pressure for building such dams is high, and then extended to the entire country. It was found that, due to the hydrometeorological conditions (mainly low precipitation compared to other regions in France), the development of small farm dams in north-western France would result in greater decreases in river flows and less efficient filling of small farm dams than in other regions. Therefore, such dams might not be as efficient as expected in supplying water to farmers when needed. Moreover, the ability to fill small farm dams is projected to decrease in a context of climate change, despite the uncertainty on the evolution of precipitation, thus worsening the situation.

scholarly journals GCM-related uncertainty for river flows and inundation under climate change: the Inner Niger Delta

2016 ◽  
Vol 61 (13) ◽  
pp. 2325-2347 ◽  
Author(s):  
Julian R. Thompson ◽  
Andrew Crawley ◽  
Daniel G. Kingston
Keyword(s):  
Climate Change ◽  
Niger Delta ◽  
River Flows

scholarly journals An assessment of the possible impacts of climate change on snow and peak river flows across Britain

2016 ◽  
Vol 136 (3-4) ◽  
pp. 539-553 ◽  
Author(s):  
V. A. Bell ◽  
A. L. Kay ◽  
H. N. Davies ◽  
R. G. Jones
Keyword(s):  
Climate Change ◽  
River Flows ◽  
Impacts Of Climate Change
Sign in / Sign up

Export Citation Format

Share Document