Pricing

from $1.00 / 1,000 reading returneds

USGS Real-Time Water Monitor

Monitor US real-time streamflow, gauge height and water quality across USGS gauges. One normalized record per reading (site, parameter, value, unit, timestamp), with optional threshold alerts and a changed-since-last-run mode. USGS data, U.S. public domain.

Pricing

from $1.00 / 1,000 reading returneds

Rating

0.0

(0)

Developer

ByteHaven Studios

Actor stats

Bookmarked

Total users

Monthly active users

6 days ago

Last modified

Categories

Developer tools

Automation

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USGS site / gauge numbers

sites

Required

USGS site numbers (station IDs) to monitor. Find them at https://waterdata.usgs.gov/ or https://dashboard.waterdata.usgs.gov/. Example: 01646500 = Potomac River near Washington, DC.

Type:array

Parameter codes

parameterCodes

Optional

USGS 5-digit parameter codes to fetch. 00060 = discharge / streamflow (ft³/s), 00065 = gauge height (ft), 00010 = water temperature (°C), 00300 = dissolved oxygen. Full list: https://help.waterdata.usgs.gov/codes-and-parameters/parameters

Type:array

Look-back period (ISO-8601 duration)

period

Optional

Optional. Return all readings within this trailing period, e.g. P1D (last day), PT6H (last 6 hours). Leave empty to return only the single LATEST reading per site+parameter (cheapest, best for monitoring).

Type:string

Example:P1D

Only readings on/after (ISO datetime)

sinceDate

Optional

Monitoring mode: return only readings whose timestamp is on/after this instant. Accepts YYYY-MM-DD or a full ISO-8601 datetime. Ignored if 'Only changed since last run' is on.

Type:string

Example:2026-07-09

Only changed since last run

monitorChangesOnly

Optional

Persist the last-seen timestamp per site+parameter (in the Actor's key-value store) and, on the next run, return only readings newer than what was already reported. Turns this Actor into a change monitor across scheduled runs.

Type:boolean

Default:false

Alert thresholds

thresholds

Optional

Per site+parameter alert rules. Each item: { "site": "01646500", "parameterCode": "00065", "above": 10, "below": 1 }. A reading whose value exceeds 'above' or falls under 'below' gets an 'alert' object attached. Use 'onlyAlerts' to return alerts exclusively.

Type:array

Return only threshold-crossing readings

onlyAlerts

Optional

When on, only readings that crossed one of the 'thresholds' are returned (and charged). Off = every reading is returned.

Type:boolean

Default:false

Max readings per site

maxResultsPerSite

Optional

Cap the number of readings returned per site (across all parameters). 0 = no cap.

Type:integer

Minimum:0

Default:0

USGS API key (optional)

apiKey

Optional

Optional. Not needed today (WaterServices requires no key). Reserved for the api.waterdata.usgs.gov cutover, where a free key (https://api.waterdata.usgs.gov/signup) raises rate limits. Stored as a secret.

Type:string

Proxy configuration

proxyConfiguration

Optional

Optional. The USGS API is a clean, open, public endpoint and needs NO proxy. You may enable Apify Proxy only to distribute requests if you monitor a very large number of sites. Default: no proxy.

Type:object

Default:

{
  "useApifyProxy": false
}

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