Ontario Flow Assessment Tool

Transcription

1 Ministry of Natural Ministry Resources of Natural and Resources Forestry Ontario Flow Assessment Tool Spatial Data Infrastructure Unit Steve Damaia Acting Far North Project Manager

2 What is OFAT OFAT III is a free online, interactive geospatial application Users can Create watersheds Characterize watersheds Estimate watershed flow (mean annual, flood and drought condition flow) View flow monitoring (HYDAT) gauge statistics Where? Anywhere in Ontario! 2

3 Ontario Flow Assessment Tool III Produced/Hosted by: Ontario Mapping and Information Resources Branch/Spatial Data Infrastructure, Peterborough, ON Funding Support from: Ontario Far North Branch Integration Branch (Formerly Lands and Waters) MOE, Source Water Protection Lands and Resources Cluster 3

4 OFAT I & II (circa 2002, 2003) Created by automating existing, labour intensive, hydrology calculations to estimate flow regimes. OFAT did not keep up with changes and improvements to GIS software. OFAT was consistently requested by users throughout the province. MNR s Far North planning initiative highlighted the severe shortage of flow monitoring data. 4

5 Re development Based on: User community input Institute for Watershed Science User Community Survey Steering Committee (MNR, MOE, CA s) Enhancements: Available online, special software not required Overall Result: Easy access to current data 5

6 Ontario Integrated Hydrology Data Backbone of OFAT watershed creation Nine packages freely available through Land Information Ontario (LIO) Packages based on larger regional secondary (or larger) watersheds Ministry of Natural Resources 6

7 Ontario Integrated Hydrology Data Seamless, consistent Provincewide analytical hydrology for all of Ontario Specs: Stream ordered network Stream Grid Enhanced Flow Direction Grid Enforced Digital Elevation Model Lambert Conformal Conic 30 metre resolution raster data Based on 1:10k, 1:20k, 1:50k input data Ministry of Natural Resources 7

8 Functional Overview 8

9 Typical Application & Benefits Watershed based planning Baseline Flow Information (ungauged sites) Supports economic growth (by easily providing baseline flow) Host of provincial applications 9

10 Potential Enhancements Updated Spatial Data (new watersheds, base), (into Quebec, Manitoba), Monitoring HYDAT Gauges (with links), watersheds, more statistics PWQMN Gauges, watersheds Climate Characterization by watershed Precipitation Characterization Dams and Diversions Hydrology Models U of G (ANN models low flow, smaller catchments) MTO HYDAT Statistics update, current GIS data to update equations of existing regional models Geocoder, Map Cache Metadata Generation Update to HTML5 mobile enabled Suggestions?????? 10

11 OFAT as a Communication Tool Baseline Hydrology Statistics Report Pre calculated statistics for HYDAT gauges in Ontario s Far North. Watersheds delineated for each station, incorporated into report. 11

12 OFAT as a Communication Tool Surface Water Monitoring Centre Flood Event Reporting Road washout near Foleyet What was the flow rate that caused this? 12

13 OFAT as a Communication Tool Surface Water Monitoring Centre Flood Event Reporting Watershed delineated at road crossing Monitoring station identified within area Time series plotted showing sharp increase in flow 13

14 Hydrology Statistics Streamflow: Baseline Streamflow Hydrology Complete (~50 gauges in Ontario s Far North) Summary statistics based on HYDAT gauge information Mean Annual Flow, Flood Flow, Low Flow, Flow Duration Curve In progress: RHBN gauges (Mean Annual Flow, Flood Flow, Low Flow, Flow Duration Curve) Great Lakes Flood Flow (>300 gauges) in production 14

15 Hydrology Statistics Precipitation: Probable Maximum Precipitation (PMP) Estimated Probable Maximum Precipitation for 1, 6 and 24 hour rainfall using statistical method (WMO, 2009) 133 rain gauges > 10 years of record 15

16 Ministry of Natural Ministry Resources of Natural and Resources Forestry Spatial Data Infrastructure Unit.ca