[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"learn-\u002Flearn\u002Fdata-sources\u002Fflood-susceptibility":3,"learn-related-data-sources\u002Fflood-susceptibility":185},{"id":4,"title":5,"body":6,"category":163,"createdAt":163,"cta":164,"description":167,"extension":168,"icon":169,"industry":163,"keywords":170,"meta":176,"navigation":177,"path":178,"province":163,"relatedPages":179,"section":181,"seo":182,"stem":183,"systems":163,"updatedAt":163,"__hash__":184},"learn\u002Flearn\u002Fdata-sources\u002Fflood-susceptibility.md","NRCan Flood Susceptibility: How Likely Land Is to Flood",{"type":7,"value":8,"toc":153},"minimark",[9,14,35,38,42,49,52,56,59,65,69,84,91,95,98,120,124],[10,11,13],"h2",{"id":12},"what-it-is","What it is",[15,16,17,18,22,23,26,27,30,31,34],"p",{},"Flood susceptibility describes how likely a piece of land is to flood, based on where floods have happened before and on the conditions that tend to come with them. ",[19,20,21],"strong",{},"Natural Resources Canada (NRCan)"," publishes a national Flood Susceptibility Mapping series, produced by the Canada Centre for Mapping and Earth Observation. Township Canada carries the ",[19,24,25],{},"present-day estimate",", which averages susceptibility over ",[19,28,29],{},"2000 to 2023"," at a ",[19,32,33],{},"30-metre"," resolution.",[15,36,37],{},"NRCan built the maps with XGBoost, a machine learning method that combines many small decision trees into one prediction. The model learns from historic flood events together with (1) land characteristics such as elevation, soil type, land cover, and vegetation, and (2) seasonal weather such as rainfall and temperature. NRCan ran the model many times on slightly different samples of the data to measure how stable its answers are.",[10,39,41],{"id":40},"what-it-carries","What it carries",[15,43,44,45,48],{},"Every 30 m cell carries one value from ",[19,46,47],{},"0 to 100",", NRCan's calibrated probability of flood susceptibility. A higher value means the land was more likely to flood in a given year over 2000 to 2023. There are no classes or cut-offs, so read it as a continuous scale.",[15,50,51],{},"Township Canada shows the values unchanged, in NRCan's own colour ramp: pale yellow for low values, through green and teal, to dark blue for high values. Lakes, rivers, and some nearshore waters also carry values and usually read high.",[10,53,55],{"id":54},"coverage-and-refresh","Coverage and refresh",[15,57,58],{},"The present-day estimate covers all of Canada, from Lake Erie to the Arctic islands. NRCan published it in March 2026, and we refresh the layer when NRCan releases a new edition.",[60,61,62],"blockquote",{},[15,63,64],{},"Contains information licensed under the Open Government Licence - Canada.\nSource: Natural Resources Canada - Flood Susceptibility Mapping.",[10,66,68],{"id":67},"how-township-canada-shows-it","How Township Canada shows it",[15,70,71,72,75,76,79,80,83],{},"Flood Susceptibility is a map layer on every paid plan. Open ",[19,73,74],{},"Map Layers",", expand ",[19,77,78],{},"Natural",", and turn on ",[19,81,82],{},"Flood Susceptibility",". It draws from the national view down to street level and sits under the survey grid, so you can read each quarter section and LSD against it. The layer is on the map only; the parcel report does not include a flood card.",[15,85,86],{},[87,88],"img",{"alt":89,"src":90},"The Flood Susceptibility layer along the Red River south of Winnipeg, with the river valley in dark blue under the survey grid and the 0 to 100 legend in the Map Layers panel","\u002Fimages\u002Flearn\u002Fdata-sources\u002Fflood-susceptibility\u002Fflood-layer.webp",[10,92,94],{"id":93},"how-to-read-it","How to read it",[15,96,97],{},"NRCan intends these maps for patterns and trends at regional and national scales. In its own words, they are not meant for \"predicting flooding at individual properties or supporting engineering or building design decisions.\" How much weight to give the layer depends on your use case:",[99,100,101,108,114],"ul",{},[102,103,104,107],"li",{},[19,105,106],{},"Screening a list of parcels",": use it to flag which quarter sections sit in higher-susceptibility ground, then look closer at those first.",[102,109,110,113],{},[19,111,112],{},"Planning across a region",": use it to compare river valleys, basins, and municipalities, where the 2000 to 2023 pattern is the signal.",[102,115,116,119],{},[19,117,118],{},"A decision about one property or structure",": treat it as context only, and rely on provincial flood hazard maps and site-specific assessment.",[10,121,123],{"id":122},"related","Related",[99,125,126,133,139,145],{},[102,127,128],{},[129,130,132],"a",{"href":131},"\u002Fguides\u002Fmap-layers","Map layers guide",[102,134,135],{},[129,136,138],{"href":137},"\u002Flearn\u002Fdata-sources\u002Fdrought-monitor","Canadian Drought Monitor",[102,140,141],{},[129,142,144],{"href":143},"\u002Flearn\u002Fdata-sources\u002Fsoil-landscapes-canada","Soil Landscapes of Canada",[102,146,147],{},[129,148,152],{"href":149,"rel":150},"https:\u002F\u002Fopen.canada.ca\u002Fdata\u002Fen\u002Fdataset\u002F1074f781-85d3-4c86-86cb-fd1c339197dc",[151],"nofollow","NRCan Flood Susceptibility Mapping on the Open Government Portal",{"title":154,"searchDepth":155,"depth":155,"links":156},"",2,[157,158,159,160,161,162],{"id":12,"depth":155,"text":13},{"id":40,"depth":155,"text":41},{"id":54,"depth":155,"text":55},{"id":67,"depth":155,"text":68},{"id":93,"depth":155,"text":94},{"id":122,"depth":155,"text":123},null,{"label":165,"href":166},"Turn on the flood layer","\u002Fapp\u002Fsearch","Natural Resources Canada's Flood Susceptibility Mapping shows how likely land across Canada was to flood from 2000 to 2023, at 30 m. Township Canada shows it as a map layer under the survey grid.","md","i-lucide-waves-arrow-up",[171,172,173,174,175],"flood susceptibility","NRCan flood mapping","flood risk map canada","flood prone land","quarter section flood",{},true,"\u002Flearn\u002Fdata-sources\u002Fflood-susceptibility",[137,143,180],"\u002Flearn\u002Fdata-sources\u002Fcli-land-capability","data-sources",{"title":5,"description":167},"learn\u002Fdata-sources\u002Fflood-susceptibility","w6lDdc-bV7av3r-A3nhU1AKshq2cHeI-KoA_5cdR9IQ",[186,298,409],{"id":187,"title":188,"body":189,"category":163,"createdAt":163,"cta":283,"description":285,"extension":168,"icon":286,"industry":163,"keywords":287,"meta":292,"navigation":177,"path":180,"province":163,"relatedPages":293,"section":181,"seo":295,"stem":296,"systems":163,"updatedAt":163,"__hash__":297},"learn\u002Flearn\u002Fdata-sources\u002Fcli-land-capability.md","CLI Land Capability: the National Agricultural Baseline",{"type":7,"value":190,"toc":276},[191,193,204,206,217,219,226,231,233,249,255,257],[10,192,13],{"id":12},[15,194,195,196,199,200,203],{},"The ",[19,197,198],{},"Canada Land Inventory (CLI) Land Capability for Agriculture"," classifies every cultivable parcel in Canada into one of ",[19,201,202],{},"seven classes"," (1 is the best, 7 has no capability) plus Class O for organic soils and Class 8 for non-arable land. Mapped at 1:50,000, CLI has been the national agricultural-capability baseline used in valuation and policy since the 1960s.",[10,205,41],{"id":40},[15,207,208,209,212,213,216],{},"Each parcel carries its ",[19,210,211],{},"CLI class"," and a single-letter ",[19,214,215],{},"limiter"," code - for example M for moisture or T for topography - that explains why the parcel is rated where it is. Township Canada inverts and normalizes the class to a 0-100 score: Class 1 maps to 100, Class 4 to roughly 57, Class 7 to 14.",[10,218,55],{"id":54},[15,220,221,222,225],{},"CLI is a ",[19,223,224],{},"static reference"," layer: the class boundaries reflect the original 1960s-to-1980s mapping and are revised only occasionally. It is national in coverage. Because it is decades old, we treat it as one input among four, not the last word - field-level appraisal still requires on-the-ground verification.",[60,227,228],{},[15,229,230],{},"Contains information licensed under the Open Government Licence - Canada.\nSource: Agriculture and Agri-Food Canada - Canada Land Inventory.",[10,232,68],{"id":67},[15,234,235,236,239,240,244,245,248],{},"CLI is the ",[19,237,238],{},"capability component (30% weight)"," of the composite ",[129,241,243],{"href":242},"\u002Flearn\u002Fag\u002Fscore-methodology","Productivity Score",". The class and its limiter are shown on the ",[19,246,247],{},"Agriculture tab"," of the parcel report for context, but the limiter does not change the score on its own.",[15,250,251],{},[87,252],{"alt":253,"src":254},"The Climate capability card on the Agriculture tab showing CLI class 2, a CLI score of 85, and topography as the primary limiter","\u002Fimages\u002Flearn\u002Fdata-sources\u002Fcli-land-capability\u002Fcli-class-card.webp",[10,256,123],{"id":122},[99,258,259,264,270],{},[102,260,261],{},[129,262,263],{"href":242},"Productivity Score methodology",[102,265,266],{},[129,267,269],{"href":268},"\u002Flearn\u002Fdata-sources\u002Fagrasid-lsrs","AGRASID 4.1 and LSRS",[102,271,272],{},[129,273,275],{"href":274},"\u002Flearn\u002Fdata-sources\u002Faafc-land-use","AAFC Land Use v5",{"title":154,"searchDepth":155,"depth":155,"links":277},[278,279,280,281,282],{"id":12,"depth":155,"text":13},{"id":40,"depth":155,"text":41},{"id":54,"depth":155,"text":55},{"id":67,"depth":155,"text":68},{"id":122,"depth":155,"text":123},{"label":284,"href":166},"See capability on a parcel report","The Canada Land Inventory classifies every cultivable parcel into seven capability classes. Township Canada uses it as the 30% capability component of the Productivity Score.","i-lucide-bar-chart-3",[288,289,290,291],"CLI","canada land inventory","land capability","agricultural capability",{},[268,274,294],"\u002Flearn\u002Fdata-sources\u002Faafc-crop-inventory",{"title":188,"description":285},"learn\u002Fdata-sources\u002Fcli-land-capability","ORnfRk3l9wwuwze3B5THXG0wP1D7WU65YRotZZ24c5Q",{"id":299,"title":300,"body":301,"category":163,"createdAt":163,"cta":395,"description":397,"extension":168,"icon":398,"industry":163,"keywords":399,"meta":404,"navigation":177,"path":137,"province":163,"relatedPages":405,"section":181,"seo":406,"stem":407,"systems":163,"updatedAt":163,"__hash__":408},"learn\u002Flearn\u002Fdata-sources\u002Fdrought-monitor.md","Canadian Drought Monitor: Current Drought-Severity Polygons",{"type":7,"value":302,"toc":388},[303,305,314,316,331,333,340,345,347,364,370,372],[10,304,13],{"id":12},[15,306,195,307,309,310,313],{},[19,308,138],{},", published by Agriculture and Agri-Food Canada, releases drought-severity polygons every month. It classifies conditions on the standard ",[19,311,312],{},"D0 to D4"," scale: D0 abnormally dry, D1 moderate, D2 severe, D3 extreme, and D4 exceptional. Township Canada carries the current month's polygons.",[10,315,41],{"id":40},[15,317,318,319,322,323,326,327,330],{},"Each polygon carries a ",[19,320,321],{},"severity"," level and label and the month it is valid for. Township Canada intersects it with the quarter section to produce the ",[19,324,325],{},"current drought class"," shown on the report, and a ",[19,328,329],{},"drought modifier"," that nudges the Productivity Score down in proportion to severity (D0 leaves the score unchanged; D4 multiplies it by 0.85).",[10,332,55],{"id":54},[15,334,335,336,339],{},"The Drought Monitor is national and refreshes ",[19,337,338],{},"monthly, around the 10th",". Our current load carries the latest published month's polygons, typically spanning the milder D0 to D2 classes across the agricultural Prairies, with more severe classes appearing in dry years.",[60,341,342],{},[15,343,344],{},"Contains information licensed under the Open Government Licence - Canada.\nSource: Agriculture and Agri-Food Canada - Canadian Drought Monitor.",[10,346,68],{"id":67},[15,348,349,350,353,354,356,357,360,361,363],{},"Drought powers the ",[19,351,352],{},"Drought"," overlay and the drought card on the ",[19,355,247],{}," of the parcel report, and it is the present-condition ",[19,358,359],{},"modifier"," in the ",[129,362,243],{"href":242},". Two parcels with identical soil can score differently this month if one sits inside a D2 polygon.",[15,365,366],{},[87,367],{"alt":368,"src":369},"The Drought card on the Agriculture tab showing D0 Abnormally Dry on the severity scale with the Drought Monitor valid date","\u002Fimages\u002Flearn\u002Fdata-sources\u002Fdrought-monitor\u002Fdrought-card.webp",[10,371,123],{"id":122},[99,373,374,378,382],{},[102,375,376],{},[129,377,263],{"href":242},[102,379,380],{},[129,381,269],{"href":268},[102,383,384],{},[129,385,387],{"href":386},"\u002Flearn\u002Fdata-sources\u002Fcomposite-quarter-section-layer","Composite quarter-section layer",{"title":154,"searchDepth":155,"depth":155,"links":389},[390,391,392,393,394],{"id":12,"depth":155,"text":13},{"id":40,"depth":155,"text":41},{"id":54,"depth":155,"text":55},{"id":67,"depth":155,"text":68},{"id":122,"depth":155,"text":123},{"label":396,"href":166},"Check drought on a parcel report","The Canadian Drought Monitor publishes monthly drought-severity polygons. Township Canada uses the current month to modify the Productivity Score and flag drought on every parcel.","i-lucide-sun",[400,401,402,403],"canadian drought monitor","drought","D0 D1 D2 D3 D4","moisture deficit",{},[268,294,386],{"title":300,"description":397},"learn\u002Fdata-sources\u002Fdrought-monitor","0ihgRN_MGJdaiIbDgRu0lYrDf5b9BseCwTK1x0oPZgg",{"id":410,"title":411,"body":412,"category":163,"createdAt":163,"cta":504,"description":506,"extension":168,"icon":507,"industry":163,"keywords":508,"meta":513,"navigation":177,"path":143,"province":163,"relatedPages":514,"section":181,"seo":515,"stem":516,"systems":163,"updatedAt":163,"__hash__":517},"learn\u002Flearn\u002Fdata-sources\u002Fsoil-landscapes-canada.md","Soil Landscapes of Canada: the National Soil Fallback",{"type":7,"value":413,"toc":497},[414,416,434,436,446,448,459,464,466,472,478,480],[10,415,13],{"id":12},[15,417,418,421,422,425,426,429,430,433],{},[19,419,420],{},"Soil Landscapes of Canada (SLC) v3.2"," is Agriculture and Agri-Food Canada's national soil dataset, describing soil ",[19,423,424],{},"order and great group"," at roughly 1:1 million scale. Inside Alberta we use the finer ",[129,427,428],{"href":268},"AGRASID",", and detailed provincial soil survey polygons now cover Saskatchewan, British Columbia, and Manitoba too; ",[19,431,432],{},"SLC is the fallback"," that keeps soil context with you wherever a detailed survey does not reach.",[10,435,41],{"id":40},[15,437,438,439,441,442,445],{},"SLC contributes the soil ",[19,440,424],{}," for a quarter section, from which we derive an estimated productivity range where a measured LSRS score is not available. Because SLC is coarse, many quarter sections sit on a single polygon and receive an averaged value - so we ",[19,443,444],{},"label the fallback explicitly"," in the UI rather than presenting it as a measured score.",[10,447,55],{"id":54},[15,449,450,451,454,455,458],{},"SLC provides soil context across the Prairies and BC outside Alberta, covering ",[19,452,453],{},"hundreds of thousands of quarter sections"," where AGRASID does not reach, refreshed ",[19,456,457],{},"annually in March",".",[60,460,461],{},[15,462,463],{},"Contains information licensed under the Open Government Licence - Canada.\nSource: Agriculture and Agri-Food Canada - Soil Landscapes of Canada v3.2.",[10,465,68],{"id":67},[15,467,468,469,471],{},"SLC fills the soil card on the ",[19,470,247],{}," of the parcel report wherever a detailed survey does not reach, always labelled as the SLC fallback. Where detailed provincial soil survey polygons exist (Alberta, Saskatchewan, British Columbia, and Manitoba), the report leads with those instead of this coarse estimate.",[15,473,474],{},[87,475],{"alt":476,"src":477},"The Agriculture tab on a Saskatchewan parcel, with the note that the soil component uses an SLC estimate and the soil card showing the SLC soil order","\u002Fimages\u002Flearn\u002Fdata-sources\u002Fsoil-landscapes-canada\u002Fslc-fallback-card.webp",[10,479,123],{"id":122},[99,481,482,488,492],{},[102,483,484],{},[129,485,487],{"href":486},"\u002Flearn\u002Fhow-to\u002Fsoil-landscapes-canada-vs-lsrs","Soil Landscapes of Canada vs LSRS",[102,489,490],{},[129,491,269],{"href":268},[102,493,494],{},[129,495,496],{"href":180},"CLI Land Capability",{"title":154,"searchDepth":155,"depth":155,"links":498},[499,500,501,502,503],{"id":12,"depth":155,"text":13},{"id":40,"depth":155,"text":41},{"id":54,"depth":155,"text":55},{"id":67,"depth":155,"text":68},{"id":122,"depth":155,"text":123},{"label":505,"href":166},"See soil context on a parcel report","Soil Landscapes of Canada v3.2 is the national soil-order dataset. Township Canada uses it for soil context outside Alberta, where AGRASID does not reach.","i-lucide-globe",[509,510,511,512],"soil landscapes of canada","SLC","soil order","great group",{},[268,180,486],{"title":411,"description":506},"learn\u002Fdata-sources\u002Fsoil-landscapes-canada","AqEN-IO8g6d8NUsKXsBveo4PB04VODXI3JgsSD1cekc"]