# Sinkhole Risk Screen - Texas Edwards Karst

**Use case:** 

Ready-to-run karst risk screen for 4 Texas Edwards Aquifer corridor sites: karst unit classification and proximity for construction and site diligence.

## Input

```json
{
  "assets": [
    {
      "lat": 29.42,
      "lon": -98.49,
      "label": "San Antonio, TX"
    },
    {
      "lat": 30.27,
      "lon": -97.74,
      "label": "Austin, TX"
    },
    {
      "lat": 29.88,
      "lon": -97.94,
      "label": "San Marcos, TX"
    },
    {
      "lat": 29.7,
      "lon": -98.12,
      "label": "New Braunfels, TX"
    }
  ],
  "radiusMiles": 2,
  "maxAssets": 500
}
```

## Output

```json
{
  "asset_label": {
    "label": "Asset label",
    "format": "string"
  },
  "asset_lat": {
    "label": "Asset latitude",
    "format": "number"
  },
  "asset_lon": {
    "label": "Asset longitude",
    "format": "number"
  },
  "in_karst_terrain": {
    "label": "In karst terrain",
    "format": "boolean"
  },
  "primary_karst_label": {
    "label": "Primary karst label",
    "format": "string"
  },
  "near_surface": {
    "label": "Near surface",
    "format": "boolean"
  },
  "sinkhole_risk_context": {
    "label": "Sinkhole risk context",
    "format": "string"
  },
  "geotech_phase1_flag": {
    "label": "Geotech Phase-I flag",
    "format": "boolean"
  },
  "nearby_karst_within_radius": {
    "label": "Nearby karst within radius",
    "format": "boolean"
  }
}
```

## About this Actor

This example demonstrates how to use [USGS Karst Sinkhole Risk Screener — Geohazard by Coordinate](https://apify.com/malonestar/karst-sinkhole-risk-screener) with a specific input configuration. Visit the [Actor detail page](https://apify.com/malonestar/karst-sinkhole-risk-screener) to learn more, explore other use cases, and run it yourself.