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TitreApplications of a regional-scale integrated modelling platform towards watershed-level hydrologic insights
TéléchargerTéléchargement (publication entière)
AuteurFrey, S; Stonebridge, G; Berg, S; Steinmoeller, D; Lapen, D; Khader, O; Erler, A; Sudicky, E
SourceRegional-Scale Groundwater Geoscience in Southern Ontario: An Ontario Geological Survey, Geological Survey of Canada, and Conservation Ontario Geoscientists Open House; par Russell, H A J; Ford, D; Holysh, S; Priebe, E H; Commission géologique du Canada, Dossier public 8528, 2019 p. 12, (Accès ouvert)
Séries alt.Ontario Geological Survey, Open File Report 6349
ÉditeurRessources naturelles Canada
ÉditeurGouvernement de l'Ontario
RéunionRegional-Scale Groundwater Geoscience in Southern Ontario: Open House; Guelph; CA; février 27-28, 2019
Documentdossier public
Mediaen ligne; numérique
Référence reliéeCette publication est contenue dans Russell, H A J; Ford, D; Holysh, S; Priebe, E H; (2019). Regional-Scale Groundwater Geoscience in Southern Ontario: An Ontario Geological Survey, Geological Survey of Canada, and Conservation Ontario Geoscientists Open House, Commission géologique du Canada, Dossier public 8528
SNRC30; 31B; 31C; 31D; 31E; 31G; 40; 41A; 41G; 41H/03; 41H/04; 41H/05; 41H/06; 41H/12; 41H/13
Lat/Long OENS -84.0000 -74.0000 46.0000 41.5000
Sujetseau souterraine; établissement de modèles; ressources en eau souterraine; aquifères; eaux de surface; bassins versants; milieu hydrologique; propriétés hydrologiques; gestion des ressources; météorologie; écoulement de la nappe d'eau souterraine; écoulement des cours d'eau; regimes d'écoulement; surveillance; prévision; hydrogéologie; géologie des dépôts meubles/géomorphologie; géologie régional; Phanérozoïque; Cénozoïque; Quaternaire; Paléozoïque; Silurien
Diffusé2019 02 08
Résumé(disponible en anglais seulement)
Persistent questions exist on how a regional scale model, such as the one developed for Southern Ontario, can be employed as a tool to address local level questions. While the spatial resolution of the regional model may be high enough for big-picture applications, it is arguably not high enough to provide useful insights on highly-dynamic small-scale hydrologic behavior or operational aspects of watershed management. In order to meet the needs of smaller scale applications, a set of HydroGeoSphere (HGS) fully-integrated groundwater - surface water models has been constructed for the 12 major watersheds that lie within the bounds of the regional model. These models have been constructed with a much higher level of spatial resolution than the regional model (i.e. with Strahler order 2 stream networks as opposed to Strahler order 3) and with full representation of the surface water features as channel elements within the model, which creates a more representative depiction of watershed and sub-watershed scale hydrologic behavior. As the underlying database upon which the watershed models are constructed is amalgamated across Southern Ontario, these models all share a consistent hydrostratigraphy, soil, and landcover representation, which in turn creates a uniform simulation framework that aligns with regional model behavior. However, in recognition of the fact that higher resolution model construction data may be available and/or required for smaller scale applications, the watershed models can be efficiently reconstructed using data in standard GIS formats.
In addition to being able to use each of the 12 watershed models as a pre-built standalone fully-integrated model for individual watersheds, the full set of models is now running operationally as a surface water forecasting system for the whole of the Southern Ontario model domain. Using an ensemble set of weather forecasts and an advanced monitoring data assimilation scheme, surface water forecasts are being generated at daily frequency for a two week forecast interval for 100's of locations across Southern Ontario. Already, a demonstrated strength of the platform is that flows at ungauged locations (as well as known gauging locations) can be predicted with some certainty given that HGS employs a physics-based mass conservative approach for simulating water movement within the highly dynamic GW-SW system in Southern Ontario.
In order to disseminate output from the hydrologic forecasting platform to watershed stakeholders, a cloud based portal has been developed with watershed-level dashboards and on-the-fly analytic functionality. While surface water flows are currently the only forecast endpoint, platform development is ongoing, with plans to release operational forecasts for other components of the hydrologic cycle in future releases.