A water coverage extraction approach to track inundation in the Saskatchewan River Delta, Canada

Sagin, Jay; Sizo, Anton; Wheater, H. S.; Jardine, Timothy D.

doi:10.1080/01431161.2014.1001084

Cited by 35 publications

(27 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Prior to our sampling in winter 2014, a large flood event occurred within the SRD in 2013, with spring and summer river discharge much greater compared with the historical average (spring peak discharge at station 05KD003 = 1690 m 3 ·s -1 ; summer peak discharge at station 05KD003 = 3640 m 3 ·s -1 ; Environment Canada 2015). As a result of such large flood events, an extensive amount of the historically connected floodplain within the SRD was inundated (Sagin et al 2015).…”

Section: Study Areamentioning

confidence: 99%

“…Water coverage data for the SRD were obtained using optical remote sensing images as described in Sagin et al (2015). A combination of Landsat, Spot, and RapidEye images were used to determine surface water coverage area (SWCA) during flood events of varying magnitudes.…”

Section: Remote Sensingmentioning

confidence: 99%

“…Our overall aim was to evaluate the use of combined optical remote sensing and stable isotope methods to determine hydrological connectivity of large river floodplains and better understand the influence of river flooding on limnology within these systems. First, we determined connectivity classes for SRD lakes using a series of optical remote sensing images representing different flood stages for the SRD (Sagin et al 2015). Next, we compared these classes with stable isotope composition measured in each of the lakes during winter.…”

Section: Introductionmentioning

confidence: 99%

“…In this study, we characterized connectivity and determined its influence on winter limnology within off-channel lakes and wetlands (hereinafter referred to as lakes) of the Saskatchewan River Delta (SRD), a large and productive inland delta with a flood regime that has been altered by upstream river flow management (Sagin et al 2015). Our overall aim was to evaluate the use of combined optical remote sensing and stable isotope methods to determine hydrological connectivity of large river floodplains and better understand the influence of river flooding on limnology within these systems.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Influence of hydrological connectivity on winter limnology in floodplain lakes of the Saskatchewan River Delta, Saskatchewan

MacKinnon

Sagin

Baulch

et al. 2016

Can. J. Fish. Aquat. Sci.

Self Cite

View full text Add to dashboard Cite

Globally, hydrological connectivity between rivers and their floodplains has been reduced by river flow management and land transformation. The Saskatchewan River Delta is North America's largest inland delta and a hub for fish and fur production. To determine the influence of connectivity on limnology within this northern floodplain, water chemistry and stable isotopes (␦ 18 O and ␦ 2 H) were analyzed during the winter of 2014 in 26 shallow lakes along a hydrological gradient. A total of five lake connectivity categories were determined by optical remote sensing imagary of surface water coverage area from years of varying flood intensities. Accuracy of categories was verified by degree of 18 O and 2 H enrichment within lakes. Both isotopes showed marked successional enrichment between connectivity categories, with more isolated lakes exhibiting greater enrichment. Water chemistry in lakes with greater connectivity to the main channel were characterized by higher pH, dissolved oxygen, nitrates, and sulfates and lower total nitrogen, total phosphorus, and ammonium compared with more isolated lakes. These findings illustrate how connectivity influences water chemistry in northern floodplain lakes and how it might determine the suitability of these lakes as winter refuge for fishes. Additionally, our study provides supporting evidence for the effective use of optical remote sensing imagery, an inexpensive and accessible source of data for researchers, when determining connectivity characteristics of large northern floodplain systems. Additionally, this study provides further evidence that the inundation of floodplain lakes by river water during peak discharge has an impact on the conditions within the lakes long into the winter ice-cover season. Understanding the year-round influence of river-floodplain connection is imperative for assessing potential impacts of climate change and future water regulation on such ecosystems.Résumé : À l'échelle planétaire, la gestion des débits des rivières et la transformation du territoire ont entraîné une diminution de la connectivité hydrologique entre les rivières et les plaines inondables. Le delta de la rivière Saskatchewan est le plus grand delta intérieur d'Amérique du Nord et une plaque tournante pour la production de poissons et de fourrures. Afin de déterminer l'influence de la connectivité sur la limnologie dans cette plaine inondable septentrionale, la chimie de l'eau et ses isotopes stables (␦ 18 O et ␦ 2 H) ont été analysés durant l'hiver 2014 dans 26 lacs peu profonds le long d'un gradient hydrologique. Cinq catégories de connectivité des lacs ont été établies au total sur la base d'images optiques de télédétection des aires recouvertes par les eaux de surface pour des années caractérisées par différentes intensités des crues. L'exactitude des catégories a été vérifiée à la lumière du degré d'enrichissement en 18

show abstract

Section: Study Areamentioning

confidence: 99%

Section: Remote Sensingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of hydrological connectivity on winter limnology in floodplain lakes of the Saskatchewan River Delta, Saskatchewan

MacKinnon

Sagin

Baulch

et al. 2016

Can. J. Fish. Aquat. Sci.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Recently, Sagin et al [114] made a conceptual assessment of the ground water resources in Kazakhstan based on a water budget approach with consideration of the underground lateral flow, hydrogeoecological regions, and river basins. The flow of water in all of the rivers of Kazakhstan is estimated at 102.3 km 3 /year.…”

Section: Managed Aquifer Rechargementioning

confidence: 99%

Essentials of Endorheic Basins and Lakes: A Review in the Context of Current and Future Water Resource Management and Mitigation Activities in Central Asia

Yapiyev

Sagin

Inglezakis

et al. 2017

Water

View full text Add to dashboard Cite

Abstract:Endorheic basins (i.e., land-locked drainage networks) and their lakes can be highly sensitive to variations in climate and adverse anthropogenic activities, such as overexploitation of water resources. In this review paper, we provide a brief overview of one major endorheic basin on each continent, plus a number of endorheic basins in Central Asia (CA), a region where a large proportion of the land area is within this type of basin. We summarize the effects of (changing) climate drivers and land surface-atmosphere feedbacks on the water balance. For the CA region, we also discuss key anthropogenic activities, related water management approaches and their complex relationship with political and policy issues. In CA a substantial increase in irrigated agriculture coupled with negative climate change impacts have disrupted the fragile water balance for many endorheic basins and their lakes. Transboundary integrated land and water management approaches must be developed to facilitate adequate climate change adaptation and possible mitigation of the adverse anthropogenic influence on endorheic basins in CA. Suitable climate adaptation, mitigation and efficient natural resource management technologies and methods are available, and are developing fast. A number of these are discussed in the paper, but these technologies alone are not sufficient to address pressing water resource issues in CA. Food-water-energy nexus analyses demonstrate that transboundary endorheic basin management requires transformational changes with involvement of all key stakeholders. Regional programs, supported by local governments and international donors, which incorporate advanced adaptation technologies, water resource research and management capacity development, are essential for successful climate change adaptation efforts in CA. However, there is a need for an accelerated uptake of such programs, with an emphasis on unification of approaches, as the pressures resulting from climate change and aggravated by human mismanagement of natural water resources leave very little time for hesitation.

show abstract

The ecohydrological vulnerability of a large inland delta to changing regional streamflows and upstream irrigation expansion

et al. 2017

Self Cite

View full text Add to dashboard Cite

Future climate change and anthropogenic interventions can alter historical streamflow conditions and consequently degrade the health and biodiversity of freshwater ecosystems. Future ecohydrological threats, however, are difficult to quantify using the cascade of climate and hydrological models due to various uncertainties involved. This study instead uses a fully bottom-up approach to evaluate the ecohydrological vulnerability of the Saskatchewan River Delta (SRD), the largest inland delta in North America, to changing streamflow regime and irrigation expansion.An ensemble of perturbed streamflow sequences, along with scenarios of current and expanded irrigation, was generated and fed into a regional water resource system model. Results show that the streamflow regime in the delta is more sensitive to upstream changes in annual flow volume than peak flow timing and/or irrigation expansion. The sensitivity to changes in flow volume, however, may be intensified when combined with changes in peak timing. Shifts in the upstream peak flow timing can alter the magnitude and timing of peak flow to the delta, with prime importance to aquatic biota that are adapted to historical rhythmicity in peak flows and timing. Irrigation expansion decreases the magnitude and frequency of the peak flows, alters the frequency of average and low flows, and slightly shifts the timing of the mean annual peak flow in the SRD. This can lead to isolation of lakes and wetlands from the main stream. Our results highlight the ecohydrological vulnerability of the SRD under potential changing conditions and can assist in proposing adaptation policies to protect this ecosystem.

show abstract

A water coverage extraction approach to track inundation in the Saskatchewan River Delta, Canada

Cited by 35 publications

References 41 publications

Influence of hydrological connectivity on winter limnology in floodplain lakes of the Saskatchewan River Delta, Saskatchewan

Influence of hydrological connectivity on winter limnology in floodplain lakes of the Saskatchewan River Delta, Saskatchewan

Essentials of Endorheic Basins and Lakes: A Review in the Context of Current and Future Water Resource Management and Mitigation Activities in Central Asia

The ecohydrological vulnerability of a large inland delta to changing regional streamflows and upstream irrigation expansion

Contact Info

Product

Resources

About