Texas

Post Oak Creek

North Texas's best beginner Cretaceous creek. Public access, easy wading, and a steady supply of shark teeth from the Western Interior Seaway.

⚠ Partial inputs

today

Good

Creek site - best 1-2 days after rain. +6 event boost

Today at a glance

Updated 2026-07-21T08:49:05.370Z

Solid hunting day. Moderate SW winds (7 mph).

Next 3 days: Next few days look steady — all good-range. Pick whatever fits your schedule.

Best Window Today

Daylight hours

This site does not depend on a tidal low. Hunt during the coolest, brightest part of the day and use the wind and conditions notes below.

Hunt score

Good

Astronomical low

—

No tide window

Low-window wind

0 mph

Light — negligible effect

Tonight's moon

First quarter

49% illuminated

Sunrise 11:32 AM · Sunset 1:36 AM

Wind right now

7 mph from SW

Gusts 12 mph

Wind direction matters — check site notes.

Past 7 days

Compare model output to your actual visits.

Next 7 days

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🌤️ Weather & Wave Forecast

Impact on visibility and stir-up over the next 5 days.

Onshore Wind: Pushes water in (tide sits higher) and stirs up the bottom. Good for "new" teeth, bad for visibility.

Offshore Wind: Water blown out (tide sits lower). Maximum beach exposure for hunting the low tide line.

Why today scores 66

The Hunt Score blends tide range, lunar phase, daylight timing, recent stir, wind setup, and surf.

Best low

No tide-driven low

Wind deviation

Neutral beach by 0.0 ft

Explain this scoreShow breakdown ▾

💡

Analysis

Solid. Reliable productivity expected.

Inland creek baseline

60.0 / 82

Peak gust 18 mph — no storm boost, no calm penalty.

Event boostadded

Manual + auto events.

Why not higher? The biggest unused headroom today is inland creek baseline (+22.0 pts available). A day with that maxed out would score around 88.

Show the math

components: 60.0 = 60.0 + event boost +6 = 66.0 final = 66

What's NOT in this score

We are deliberate about which factors to include. These are not currently in the model:

Hunt pressure. A “hunts this week” chip is shown on each location page for transparency, but it does not change the score yet. We need more outcomes per site before a penalty would be statistically meaningful.
Wave period / swell direction. We use wave height only. Long-period groundswell sorts material differently than short wind chop, but Open-Meteo doesn't expose period reliably.
Barometric pressure trend. Falling pressure = approaching storm = building stir. Currently we wait for the wind to actually arrive.
Water temperature, clarity, salinity. Affects comfort but not (directly) what teeth wash up.
Weekday vs weekend. A 70 on Tuesday is often better in practice than a 70 on Saturday because of crowds, but we don't adjust for that.
Beach renourishment. Fresh sand buries everything. We capture this only when an admin logs a manual event — there's no auto-detection.

If you think we should add one of these, log a hunt with notes — every rated outcome helps us decide which signals actually predict tooth count.

Hunt Score

Sum of components + 6 event boost, clamped 0–100.

Score model 2026.04.29 · how this is calculated

Hunted here today?

Rate this hunt

We predicted 66. Tell us how it actually went — your rating calibrates the model.

model 2026.04.29

Pulling the species cheat sheet…

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Geology

FormationsAustin Chalk, Eagle Ford Group

EpochsLate Cretaceous

Age~90-85 million years

Star speciesSqualicorax

Technique

Wade slowly, screen gravel bars, and inspect the downstream edge of shell and phosphate pockets after rain resets the creek.

Access

Public creek access in Sherman city park corridors and bridge crossings; popular with families and local fossil clubs.

🗺 Open in Google Maps 🧭 Open in Apple Maps

Legality & ethics

Casual collecting in public access areas is generally allowed. Stay out of posted private banks and avoid undercutting the creek.

Hazards

Slippery clay banks
Flashy water after storms
Summer heat with little shade

Insider tips

Go a day or two after rain when gravel bars are fresh but the flow has settled
Tiny black triangles hide in pea gravel, not just in obvious shell concentrations
Crow shark teeth often look stubby and thick compared with Miocene beach teeth