Description

The Department of Homeland Security (MSI) supports the development of flood risk knowledge. In collaboration with Laval University and the Reunification of Quebec Basin Organizations, the MSI has developed a methodical and rigorous process for documenting floods that have an impact on the safety of people and essential goods. Thus, since 2017, the Ministry of Homeland Security (MSI) has been acquiring in certain cases data related to the water level reached when floods with proven consequences occur in southern Quebec. Maximum water levels are indicated by flood overflows. __What is a flood disaster? __ A flood (flood) is characterized by a rise in water on land that is usually dry, the reaching of a peak, then a descent of water (decline). Waste forms at the beginning of the flood when the water, when withdrawing, deposits materials that were in suspension or floating. These materials (mud, seeds, twigs and other debris) constitute flood wastes or flood plains. __Marking and surveying flood plains and water levels__ The marking of floodplains and water levels takes place on the ground shortly after the peak of the flood. The physical indices of the maximum water level reached (abandoned by the flood) or of the current water levels are identified and marked using permanent markers (markers). Afterwards, a land surveyor will precisely record the location and the altitude of the markers. __Point dataset “Water levels during a flood"__ The “Water levels during a flood” data set contains, for each marker, the date, altitude and location (measured by a land surveyor). There are two main types of observations made in the field: the natural flood defect (line of mud, seeds or trace of water) which indicates the maximum water level reached during the flood (called MAX) and the water level observed during the field visit (called CURRENT). The list of all attributes is provided in the dataset description sheet (Additional Information section). Despite the quality of the work carried out, the Ministry of Homeland Security cannot guarantee the absence of errors in the data. __Related datasets__ The “Flood Benchmarks” dataset produced by the Ministry of Homeland Security also contains maximum water levels reached during a flood. The link to this dataset is provided in the _Documentation_ section.**This third party metadata element was translated using an automated translation tool (Amazon Translate).**

Resources

Name	Format	Description	Link
Water levels during a flood	WFS		https://geoegl.msp.gouv.qc.ca/apis/wss/historiquesc.fcgi?SERVICE=WFS&VERSION=1.1.0&REQUEST=GetCapabilities
Water levels during a flood	CSV		https://geoegl.msp.gouv.qc.ca/apis/wss/historiquesc.fcgi?service=wfs&version=1.1.0&request=getfeature&typename=MSP_DELAISS_CRUE_PUBLIC_P&outputformat=csv
Water levels during a flood	GeoJSON		https://geoegl.msp.gouv.qc.ca/apis/wss/historiquesc.fcgi?service=wfs&version=1.1.0&request=getfeature&typename=MSP_DELAISS_CRUE_PUBLIC_P&outputformat=geojson&srsName=epsg:4326
Water levels during a flood	ESRI Shape		https://geoegl.msp.gouv.qc.ca/apis/wss/historiquesc.fcgi?service=wfs&version=1.1.0&request=getfeature&typename=MSP_DELAISS_CRUE_PUBLIC_P&outputformat=shp
Water levels during a flood	HTML		https://www.carte-igo.donneesquebec.ca/?urls=https://geoegl.msp.gouv.qc.ca/apis/wss/complet.fcgi?&layers=0,[msp_delaiss_crue_public_p]n,0t,1v
Flood markers (Quebec data)	HTML		https://www.donneesquebec.ca/recherche/dataset/reperes-de-crue-inondation-msp
Original metadata (https://www.donneesquebec.ca)	HTML		https://www.donneesquebec.ca/recherche/fr/dataset/1935bceb-4045-436e-9c1b-3997b55752a8

Tags

Topics

Categories