Modeling the hydrological significance of wetland restoration scenarios

Martinez-Martinez, Edwin; Nejadhashemi, A. Pouyan; Woznicki, Sean A.; Love, Bradley J.

doi:10.1016/j.jenvman.2013.11.046

Cited by 63 publications

(41 citation statements)

References 22 publications

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“…The minimal impact of wetlands on the flow regime of the Logone as observed in this study may also be attributed to the location of the wetlands with respect to the main river channel (most wetlands are located on tributary channels) and also because many of the wetlands especially in the upstream part of the catchment had surface areas \ 50 ha. This follows the findings of Martinez-Martinez et al (2014) who asserted that wetlands with surface area measuring\ 50 ha or those located on tributary channels had negligible impact on streamflow hydrograph(s) of the main channel.…”

Section: Impact Of Wetlands Flow Regimesupporting

confidence: 87%

Effect of single and multi-site calibration techniques on hydrological model performance, parameter estimation and predictive uncertainty: a case study in the Logone catchment, Lake Chad basin

Nkiaka

Nawaz

Lovett

2017

Stoch Environ Res Risk Assess

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Understanding hydrological processes at catchment scale through the use of hydrological model parameters is essential for enhancing water resource management. Given the difficulty of using lump parameters to calibrate distributed catchment hydrological models in spatially heterogeneous catchments, a multiple calibration technique was adopted to enhance model calibration in this study. Different calibration techniques were used to calibrate the Soil and Water Assessment Tool (SWAT) model at different locations along the Logone river channel. These were: single-site calibration (SSC); sequential calibration (SC); and simultaneous multi-site calibration (SMSC). Results indicate that it is possible to reveal differences in hydrological behavior between the upstream and downstream parts of the catchment using different parameter values. Using all calibration techniques, model performance indicators were mostly above the minimum threshold of 0.60 and 0.65 for Nash Sutcliff Efficiency (NSE) and coefficient of determination (R 2 ) respectively, at both daily and monthly time-steps. Model uncertainty analysis showed that more than 60% of observed streamflow values were bracketed within the 95% prediction uncertainty (95PPU) band after calibration and validation. Furthermore, results indicated that the SC technique outperformed the other two methods (SSC and SMSC). It was also observed that although the SMSC technique uses streamflow data from all gauging stations during calibration and validation, thereby taking into account the catchment spatial variability, the choice of each calibration method will depend on the application and spatial scale of implementation of the modelling results in the catchment.

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Section: Impact Of Wetlands Flow Regimesupporting

confidence: 87%

Effect of single and multi-site calibration techniques on hydrological model performance, parameter estimation and predictive uncertainty: a case study in the Logone catchment, Lake Chad basin

Nkiaka

Nawaz

Lovett

2017

Stoch Environ Res Risk Assess

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“…The "wetland" (hereafter referred to as the "conventional wetland")," and "pond" representations are the traditional means of wetland simulation (e.g.,Wu and A. Johnston, 2008;Babbar-Sebens, 2012;Martinez-Martinez et al, 2014). The conventional wetland and pond representations have also been applied in parallel to depict structurally and functionally distinct systems (see Almendinger et al, 2011).…”

Section: Wetland Representationsmentioning

confidence: 99%

Geographically isolated wetlands and watershed hydrology: A modified model analysis

Evenson

Golden

Lane

et al. 2015

Journal of Hydrology

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Geographically isolated wetlands (GIWs) are defined as wetlands that are completely surrounded by uplands. While GIWs are therefore spatially isolated, field-based studies have observed a continuum of hydrologic connections between these systems and other surface waters. Yet few studies have quantified the watershed-scale aggregate effects of GIWs on downstream hydrology. Further, existing modeling approaches to evaluate GIW effects at a watershed scale have utilized conceptual or spatially disaggregated wetland representations. Working towards wetland model representations that use spatially explicit approaches may improve current scientific understanding concerning GIW effects on the downstream hydrograph. The objective of this study was to quantify the watershed-scale aggregate effects of GIWs on downstream hydrology while emphasizing a spatially explicit representation of GIWs and GIW connectivity relationships. We constructed a hydrologic model for a ~202 km 2 watershed in the Coastal Plain of North Carolina, USA, a watershed with a substantial population of GIWs, using the Soil and Water Assessment Tool (SWAT). We applied a novel representation of GIWs within the model, facilitated by an alternative hydrologic response unit (HRU) definition and modifications to the SWAT source code that extend the model's "pothole" representation. We then executed a series of scenarios to assess the downstream hydrologic effect of various distributions of GIWs within the watershed. Results suggest that: (1) GIWs have seasonally dependent effects on baseflow; (2) GIWs mitigate peak flows; and (3) The presence of GIWs on the landscape impacts the watershed water balance. This work demonstrates a means of GIW simulation with improved spatial detail while showing that GIWs, in-aggregate, have a substantial effect on downstream hydrology in the studied watershed.3

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“…Based on the hydrogeomorphic (HGM) approach (Brinson, ; Brinson, ) to wetland functions assessment, Whigham () argued that wetland functions are based on location within the landscape and Mitsch and Gosselink () supported the idea that they are spatially distributed. Thereby, the few studies conducted to investigate the flood mitigation benefits related to wetland location showed that both upstream/downstream gradient (Loucks, ; Ogawa and Male, ) and stream order effect (Martinez‐Martinez et al ., ; Ogawa and Male, ) impact the functions and benefits they provide.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the impact of spatio-temporal attributes of wetlands on stream flows using a hydrological modelling framework: a theoretical case study of a watershed under temperate climatic conditions

2015

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Wetlands play a significant role on the hydrological cycle, reducing flood peaks through water storage functions and sustaining low flows through slow water release ability. However, their impacts on water resources availability and flood control are mainly driven by wetland type (e.g. isolated wetland—IW—and riparian wetland—RW) and location within a watershed. Consequently, assessing the qualitative and quantitative impact of wetlands on hydrological regimes has become a relevant issue for scientists as well as stakeholders and decision‐makers. In this study, the distributed hydrological model, HYDROTEL, was used to investigate the role and impact of the geographic distribution of isolated and RWs on stream flows of the Becancour River watershed of the St Lawrence Lowlands, Quebec, Canada. The model was set up and calibrated using available datasets (i.e. DEM, soil, wetland distribution, climate, land cover, and hydrometeorological data for the 1969–2010 period). Different wetland theoretical location tests (WTLT) were simulated. Results were used to determine whether stream flow parameters, related to peak flows and low flows, were related to: (i) geographic location of wetlands, (ii) typology of wetlands, and (iii) seasonality. The contribution of a particular wetland was assessed using intrinsic characteristics (e.g. surface area, typology) and extrinsic factors (e.g. location in the watershed landscape and seasonality). Through these investigations, the results suggest, to some extent, that both IWs and RWs impact landscape hydrology. The more IWs are located in the upper part of the watershed, the greater their effect on both on high flow damping and low flow support seems to be. The more RWs are connected to a main stream, the greater their effect is. Our modelling results indicate that local landscape conditions may influence the wetland effect; promoting or limiting their efficiency, and thus their impacts on stream flows depend on a combined effect of wetland and landscape attributes. Copyright © 2015 John Wiley & Sons, Ltd.

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Modeling the hydrological significance of wetland restoration scenarios

Cited by 63 publications

References 22 publications

Effect of single and multi-site calibration techniques on hydrological model performance, parameter estimation and predictive uncertainty: a case study in the Logone catchment, Lake Chad basin

Effect of single and multi-site calibration techniques on hydrological model performance, parameter estimation and predictive uncertainty: a case study in the Logone catchment, Lake Chad basin

Geographically isolated wetlands and watershed hydrology: A modified model analysis

Assessment of the impact of spatio-temporal attributes of wetlands on stream flows using a hydrological modelling framework: a theoretical case study of a watershed under temperate climatic conditions

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