Public Atlas.
HOW PUBLIC ATLAS WORKS

Know the source.
Know the limits.

We turn official public records into useful views while preserving the source, time, and meaning of each number.

OUR APPROACH

Every number has a provenance.

Automated jobs retrieve public feeds, validate the expected fields and dates, and build a static snapshot. A failed import does not replace the last checked file. The public page may still become stale, so freshness and source links matter.

Water snapshot: Sep 29, 2026, 1:45 AM UTC
River / SPC snapshot: Sep 29, 2026, 1:48 AM UTC
Reference files retrieved: Sep 29, 2026, 12:01 AM UTC
01 / LAKES

Texas lake levels

TWDB recent conditions JSON supplies the current reading. Each reservoir’s 30-day CSV supplies the trend. Percent full compares conservation storage with conservation capacity; it is not a lake-depth percentage. The source date can precede our retrieval.

TWDB downloads
01B / OTHER RESERVOIRS

Keep each source’s reference

Shasta, Oroville and Folsom use CDEC daily sensor 6 elevation in feet. We retain its series date and observation date separately and omit missing values. Lake Lanier uses USGS 02334400 parameter 00062. Smith Mountain uses AEP’s published forebay table and original timestamp. These sources do not share a normalized storage percentage, so they stay outside the Texas comparison. Bull Shoals currently has an official-source guide while its automated feed remains unverified.

Check source dates →
02 / TIDES

NOAA tide predictions

NOAA CO-OPS predicts high and low water for the station printed on each page. We receive events in UTC, convert to the station’s local time zone, and show feet relative to MLLW. Weather and distance from the reference station can change observed conditions.

NOAA tide API
03 / RIVERS

USGS gauge height

USGS parameter 00065 gives the latest stage in feet at a named station. Stage uses that gauge’s local datum, so values at different gauges should not be compared. Daily mean trend data appear only when the selected station publishes enough values.

USGS modern API
04 / RADON

EPA zones + Census ZCTAs

EPA zones describe county-level radon potential, not measurements for a home or a USPS ZIP code. We join EPA county labels to Census 2020 county equivalents and ZCTA relationships. 3,096 counties match; unmatched places show no zone. A ZCTA can span counties, and every home should be tested.

EPA zone explanation
05 / GS PAY

OPM 2026 workbook

Annual and hourly rates are read directly from OPM’s 2026 General Schedule spreadsheet for base GS, Washington-Baltimore-Arlington, and Rest of U.S. tables. We do not derive capped pay from a locality percentage. The pages omit special rates and do not decide a worker’s applicable locality.

OPM spreadsheet
06 / BURN BANS

Official map links only

Texas and Arkansas status can change through local orders. The site does not have a reliable verified machine-readable county-status feed, so it does not republish a yes/no status. The state guides link to official maps and explain the need to check the issuing authority.

Burn-ban source guides
07 / HAIL

Preliminary and confirmed reports

NOAA SPC’s current daily CSV is preliminary and refreshed often. NCEI Storm Events is reviewed but delayed; the available 2026 file reaches 2026-06-30. We keep them separate and do not infer a street-address hail footprint.

NCEI bulk file
08 / FRESHNESS

Update schedule and warnings

The site is designed for daily water, river, and preliminary hail imports, plus weekly checks of the slower OPM, EPA/Census, and NCEI reference files. If a job fails or a source lags, follow the agency link on the page for the current record.