This workflow corresponds to n8n.io template #flood-detection-workflow — we link there as the canonical source.
The workflow JSON
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{
"name": "Flood Detection Workflow",
"active": true,
"nodes": [
{
"parameters": {
"httpMethod": "POST",
"path": "flood-detection",
"responseMode": "responseNode",
"options": {}
},
"id": "webhook-1",
"name": "Webhook",
"type": "n8n-nodes-base.webhook",
"typeVersion": 1,
"position": [
240,
300
]
},
{
"parameters": {
"url": "={{$node[\"Webhook\"].json[\"backend_url\"]}}/detect_flood_from_coordinates",
"sendQuery": false,
"sendHeaders": false,
"sendBody": true,
"contentType": "json",
"body": {
"bbox_str": "={{$node[\"Webhook\"].json[\"coordinates\"]}}",
"analysis_date_timestamp": "={{$node[\"Webhook\"].json[\"timestamp\"]}}"
},
"options": {}
},
"id": "http-request-1",
"name": "Call Flood Detection API",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4.1,
"position": [
460,
300
]
},
{
"parameters": {
"respondWith": "json",
"responseBody": {
"status": "success",
"result_url": "={{$node[\"Call Flood Detection API\"].json[\"result_url\"]}}",
"timestamp": "={{$now}}"
}
},
"id": "respond-1",
"name": "Respond to Webhook",
"type": "n8n-nodes-base.respondToWebhook",
"typeVersion": 1,
"position": [
680,
300
]
},
{
"parameters": {
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict"
},
"conditions": [
{
"id": "error-check",
"leftValue": "={{$node[\"Call Flood Detection API\"].json[\"error\"]}}",
"rightValue": "",
"operator": {
"type": "string",
"operation": "exists"
}
}
],
"combinator": "and"
},
"options": {}
},
"id": "if-1",
"name": "Check for Errors",
"type": "n8n-nodes-base.if",
"typeVersion": 2,
"position": [
460,
480
]
},
{
"parameters": {
"respondWith": "json",
"responseBody": {
"status": "error",
"error": "={{$node[\"Call Flood Detection API\"].json[\"error\"]}}",
"timestamp": "={{$now}}"
}
},
"id": "respond-error",
"name": "Respond with Error",
"type": "n8n-nodes-base.respondToWebhook",
"typeVersion": 1,
"position": [
680,
480
]
}
],
"connections": {
"Webhook": {
"main": [
[
{
"node": "Call Flood Detection API",
"type": "main",
"index": 0
}
]
]
},
"Call Flood Detection API": {
"main": [
[
{
"node": "Check for Errors",
"type": "main",
"index": 0
},
{
"node": "Respond to Webhook",
"type": "main",
"index": 0
}
]
]
},
"Check for Errors": {
"main": [
[
{
"node": "Respond with Error",
"type": "main",
"index": 0
}
]
]
}
},
"createdAt": "2025-01-19T08:00:00.000Z",
"updatedAt": "2025-01-19T08:00:00.000Z",
"settings": {
"executionOrder": "v1"
},
"staticData": null,
"meta": {
"templateId": "flood-detection-workflow"
}
}
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About this workflow
Flood Detection Workflow. Uses httpRequest. Webhook trigger; 5 nodes.
Source: https://github.com/mcawte/Flood_Detection_Demo/blob/87131f7831618b981a3ca55916a2704099fcf0ff/n8n-workflows/flood-detection.json — original creator credit. Request a take-down →
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