CSV

Seasonal Weather Data

Seasonal ETo, Peff, and ETF data are provided for calculating agricultural variances for suppliers that have qualifying urban agriculture acreage in their service area. Seasonal values are weighted average values that are calculated based on crop acreages within the service area boundaries. Crop acreages are derived from DWR’s land use data layer (CADWR Land Use Viewer). The evapotranspiration fraction (ETF) was calculated from weighted average values of crop coefficient (Kc) and irrigation efficiency (IE), which are also provided in this file.

The tables from which this dataset have been compiled are released by the Department of Water Resources per fiscal year at this page.

Download Resource< Back to dataset

Data dictionary

Field definitions supplied by the publishing agency in CKAN.

Column	Type	Label	Description
DWR_ID	numeric	DWR_ID	—
Supplier_Name	text	Supplier_Name	—
Supplier_Number	numeric	Supplier_Number	—
Supplier_ID	text	Supplier_ID	—
FY_START_DATE	date	FY_START_DATE	—
FY_END_DATE	date	FY_END_DATE	—
Seasonal_Eto_inches	numeric	Seasonal_Eto_inches	—
Seasonal_Peff_inches	numeric	Seasonal_Peff_inches	—
Seasonal_Kc	numeric	Seasonal_Kc	—
Seasonal_IE	numeric	Seasonal_IE	—
Seasonal_ETF	numeric	Seasonal_ETF	—

Resource details

Format	CSV
Size	105 KB
Rows	1,227
Last updated	Sep 30, 2026
Part of	Urban Water Use Objectives – Relevant Data

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

First five results

"https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search?resource_id=f6285bcc-81b0-478a-87f6-789779c79d95&limit=5"

Results containing "jones"

"https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search?resource_id=f6285bcc-81b0-478a-87f6-789779c79d95&q=jones"

SQL query

"https://ckan.cdt.dev.datopian.com/api/3/action/datastore_search_sql?sql=SELECT%20%2A%20FROM%20%22f6285bcc-81b0-478a-87f6-789779c79d95%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: 'f6285bcc-81b0-478a-87f6-789779c79d95', 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=f6285bcc-81b0-478a-87f6-789779c79d95&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).