Assessment of Wetland Restoration and Climate Change Impacts on Water Balance Components of the Heeia Coastal Wetland in Hawaii

Ghazal, Kariem A.; Leta, Olkeba Tolessa; El‐Kadi, Aly I.; Dulai, Henrietta

doi:10.3390/hydrology6020037

Cited by 11 publications

(13 citation statements)

References 35 publications

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“…The relationship between baseflow and human impacts and climate change varied. The reduction of annual baseflow in the Walzem Creek watershed may be attributed to the reduction of cultivated area and implementation of imperviousness, which in turn has a negative impact on the infiltration rate by increasing the surface runoff, specifically during the wet season of the year [49]. On the other hand, the increasing trend in the annual baseflow in the UWBDR was similar to the trend of the Little Eagle Creek (LEC) watershed mentioned by Aboelnour et al [8].…”

Section: Trends In Climatic Componentssupporting

confidence: 72%

“…Only parameters sensitive for the watersheds were then used in the calibration process and optimized based on monthly values [48]. Both automatic and manual calibration were carried out to allow qualitative and quantitative comparisons of the values, to fine tune the values of the auto-calibrated parameters, and to decrease the differences between the observed and simulated outputs [49].…”

Section: Soil and Water Assessment Tool (Swat) Model Calibration And mentioning

confidence: 99%

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A Comparison of Streamflow and Baseflow Responses to Land-Use Change and the Variation in Climate Parameters Using SWAT

Aboelnour

Gitau

Engel

2020

Water

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Alteration of land use and climate change are among the main variables affecting watershed hydrology. Characterizing the impacts of climate variation and land use alteration on water resources is essential in managing watersheds. Thus, in this research, streamflow and baseflow responses to climate and land use variation were modeled in two watersheds, the Upper West Branch DuPage River (UWBDR) watershed in Illinois and Walzem Creek watershed in Texas. The variations in streamflow and baseflow were evaluated using the Soil and Water Assessment Tool (SWAT) hydrological model. The alteration in land use between 1992 and 2011 was evaluated using transition matrix analysis. The non-parametric Mann–Kendall test was adopted to investigate changes in meteorological data for 1980–2017. Our results indicate that the baseflow accounted for almost 55.3% and 33.3% of the annual streamflow in the UWBDR and Walzem Creek watersheds, respectively. The contribution of both land use alteration and climate variability on the flow variation is higher in the UWBDR watershed. In Walzem Creek, the alteration in streamflow and baseflow appears to be driven by the effect of urbanization more than that of climate variability. The results reported herein are compared with results reported in recent work by the authors in order to provide necessary information for water resources management planning, as well as soil and water conservation, and to broaden the current understanding of hydrological components variation in different climate regions.

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Section: Trends In Climatic Componentssupporting

confidence: 72%

Section: Soil and Water Assessment Tool (Swat) Model Calibration And mentioning

confidence: 99%

A Comparison of Streamflow and Baseflow Responses to Land-Use Change and the Variation in Climate Parameters Using SWAT

Aboelnour

Gitau

Engel

2020

Water

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“…Results here showed similar trends with the findings of Ficklin et al [1], indicating that baseflow exhibits a negative trend over time in the southern part of the US, while having a positive one in the central US. The reduction of annual baseflow in the Walzem Creek watershed may be attributed to the reduction of cultivated area and implementation of imperviousness, which in turn has a negative impact on the infiltration rate by increasing the surface runoff, specifically during the wet season of the year [49]. On the other hand, the increasing trend in the annual baseflow in the UWBDR was similar to the trend of the Little Eagle Creek (LEC) watershed mentioned in Aboelnour et al [8].…”

Section: Trends In Hydrologic Componentssupporting

confidence: 70%

“…Only parameters sensitive for the watersheds were then used in the calibration process and optimized based on monthly values [48]. Both automatic and manual calibration were carried out to allow qualitative and quantitative comparisons of the values, to fine tune the values of the auto-calibrated parameters, as well as to decrease the differences between the observed and simulated outputs [49].…”

Section: Soil and Water Assessment Tool (Swat) Model Calibration And mentioning

confidence: 99%

A Comparison of Streamflow and Baseflow Responses to Land-Use and Climate Change Using SWAT

Aboelnour¹,

Gitau²,

Engel³

2019

Preprint

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Alteration of land use and climate change are among the main variables affecting watershed hydrology. Characterizing the impacts of climate variation and land use alteration on water resources is essential in managing watersheds. Thus, in this research, streamflow and baseflow responses to climate and land use variation were modeled in two watersheds, the Upper West Branch DuPage River (UWBDR) watershed in Illinois and Walzem Creek watershed in Texas. The variations in streamflow and baseflow were evaluated using the Soil and Water Assessment Tool (SWAT) hydrological model. The alteration in land use between 1992 and 2011 was evaluated using transition matrix analysis. The non-parametric Mann-Kendall test was adopted to investigate changes in meteorological data from 1980-2017. Our results indicated that the baseflow accounted for almost 55.3% and 33.3% of the annual streamflow in the UWBDR and Walzem Creek watersheds, respectively. The contribution of both land use alteration and climate variability on the flow variation is higher in the UWBDR watershed. In Walzem Creek, the alteration in streamflow and baseflow appears to be driven by the effect of urbanization more than that of climate variability. The results reported herein are compared with results reported in recent work by the authors in order to provide necessary information for water resources management planning, as well as soil and water conservation, and to broaden the current understanding of hydrological components variation in different climate regions.

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“…For the validation period (2009-2014), 96% of observed streamflow values were bracketed at the Haiku station, while 95% of the observed data were captured within the 95PPU at the wetland station. In addition, the R-factor values were close to 1 at both stations (Table 3), indicating that the model is reliable to simulate the Heeia watershed streamflow [53][54][55] and its applicability for future scenarios analysis.…”

Section: Daily Streamflow Simulation and Uncertainty Analysismentioning

confidence: 61%

Impact of Coastal Wetland Restoration Plan on the Water Balance Components of Heeia Watershed, Hawaii

et al. 2020

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Optimal restoration and management of coastal wetland are contingent on reliable assessment of hydrological processes. In this study, we used the Soil and Water Assessment Tool (SWAT) model to assess the impacts of a proposed coastal wetland restoration plan on the water balance components of the Heeia watershed (Hawaii). There is a need to optimize between water needs for taro cultivation and accompanying cultural practices, wetland ecosystem services, and streamflow that feeds downstream coastal fishponds and reefs of the Heeia watershed. For this, we completed two land use change scenarios (conversion of an existing California grassland to a proposed taro field and mangroves to a pond in the wetland area) with several irrigation water diversion scenarios at different percent of minimum streamflow values in the reach. The irrigation water diversion scenarios aimed at achieving sustainable growth of the taro crop without compromising streamflow value, which plays a vital role in the health of a downstream fishpond and coastal environment of the watershed. Findings generally suggest that the conversion of a California grassland to a patched taro field is expected to decrease the baseflow value, which was a major source of streamflow for the study area, due to soil layer compaction, and thus decrease in groundwater recharge from the taro field. However, various taro irrigation water application and management scenarios suggested that diverting 50% of the minimum streamflow value for taro field would provide sustainable growth of taro crop without compromising streamflow value and environmental health of the coastal wetland and downstream fishponds.

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Assessment of Wetland Restoration and Climate Change Impacts on Water Balance Components of the Heeia Coastal Wetland in Hawaii

Cited by 11 publications

References 35 publications

A Comparison of Streamflow and Baseflow Responses to Land-Use Change and the Variation in Climate Parameters Using SWAT

A Comparison of Streamflow and Baseflow Responses to Land-Use Change and the Variation in Climate Parameters Using SWAT

A Comparison of Streamflow and Baseflow Responses to Land-Use and Climate Change Using SWAT

Impact of Coastal Wetland Restoration Plan on the Water Balance Components of Heeia Watershed, Hawaii

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