Fig. 3. Toxicity and Urban Land Use
The percentage of toxic and non-toxic Hyalella azteca samples collected from 2008 to 2017, based on increasing urban land use (< 25% Urban, <50% Urban, <75% Urban, <100% Urban). The land use category is based on percent urban land use at 5km. As in, how much of the area within 5km of a sampling site is classified as urban. This dataset was created for the 2019 Water Quality Status Report. It was compiled using data from the Stream Pollution Trends (SPoT) Monitoring Program, part of the Surface Water Ambient Monitoring Program at the State Water Resources Control Board.
Data dictionary
Field definitions supplied by the publishing agency in CKAN.
| Column | Type | Label | Description |
|---|---|---|---|
| LandUseCategory | text | LandUseCategory | — |
| ToxicityCategory | text | ToxicityCategory | — |
| Percent | numeric | Percent | — |
Resource details
| Format | CSV |
|---|---|
| Size | 253 B |
| Rows | 8 |
| Last updated | Sep 29, 2026 |
| Part of | 2019 California Water Quality Status Report |
Other resources in this dataset
CKAN Data API
Access resource data through the CKAN DataStore API. The examples below use this resource's ID.
Endpoints
The Data API provides these actions. Creating or updating records requires appropriate permissions; the query actions read public DataStore records.
| Create | https://ckan.cdt.dev.datopian.com/api/3/action/datastore_create |
|---|---|
| Update / insert | https://ckan.cdt.dev.datopian.com/api/3/action/datastore_upsert |
| Query | https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search |
| Query via SQL | https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search_sql |
Query examples
"https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search?resource_id=96bc7125-4208-494c-9c7c-4f1fbc93ca3d&limit=5""https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search?resource_id=96bc7125-4208-494c-9c7c-4f1fbc93ca3d&q=jones""https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search_sql?sql=SELECT%20%2A%20FROM%20%2296bc7125-4208-494c-9c7c-4f1fbc93ca3d%22%20LIMIT%205"SQL queries depend on whether SQL search is enabled by the portal.
OData query
Use the resource's OData URL and its field names for paging, selecting columns, or filtering rows.
ODATA_RESOURCE_URL?$top=5
ODATA_RESOURCE_URL?$skip=5&$top=5
ODATA_RESOURCE_URL?$select=FIELD_NAME&$filter=FIELD_NAME eq 'VALUE'Replace ODATA_RESOURCE_URL, FIELD_NAME, and VALUE with the details for the selected resource. See the OData query options guide (opens in a new tab) for more examples.
Use the API in code
JavaScript (JSONP)
var data = { resource_id: '96bc7125-4208-494c-9c7c-4f1fbc93ca3d', limit: 5, q: 'jones' };
$.ajax({
url: 'https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search',
data: data,
dataType: 'jsonp',
success: function (response) {
console.log(response.result.total, response.result.records);
}
});Python
import json
from urllib.request import urlopen
url = 'https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search?resource_id=96bc7125-4208-494c-9c7c-4f1fbc93ca3d&limit=5'
with urlopen(url) as response:
result = json.load(response)['result']
print(result['total'], result['records'])For parameters and response fields, see the CKAN DataStore documentation (opens in a new tab).