LiDAR bare-earth terrain around Finnegan Falls near Westley, California LiDAR terrain view · USGS 3DEP
Nearby gauge (San Joaquin River) · 1,230 ft³/s · Lower than usual

Finnegan Falls

California

By Armen Suny · Last verified Oct 2026

LiDAR & 3D terrain
San Joaquin River National Wildlife Refuge CONE · PVT

About Finnegan Falls

Frequently Asked Questions

🐶 Are Dogs Allowed at Finnegan Falls?

❌ Dogs are not allowed

Are There Any Fees or Permits Required?

🆖 No fees required

🏊 Is There Swimming at Finnegan Falls?

❌ Swimming is not allowed

When to Visit

spring summer fall

Seasonal Access

The best time to visit is Spring, Summer, and Fall. Winter access may be limited.

Current Water Conditions

Updated about 2 hours ago Strong

These readings come from the USGS gauge on San Joaquin River, 2.3 miles away, not on Finnegan Falls's own stream. Use them as a sign of whether the area is running wet or dry.

1,230 ft³/s

Current discharge — how much water is flowing

Lower than usual for this time of year

Based on 98 years of record

8.35 ft

Water depth at gauge

7-Day Discharge Trend

What does this mean for your visit?

Flow is lower than usual for this time of year.

About This Gauge

USGS 11303500
2.3 miles from waterfall
Drainage: 13,539 sq mi
Altitude: 3 ft

7-Day Flow Outlook

Based on the USGS gauge SAN JOAQUIN R NR VERNALIS CA (4 km away).

High confidence
Strong right now
1230 cfs
→ Holding steady
95999195999999TodayTomorrowTueWedThuFriSat

Today

Roaring

1328 cfs

6/10

Tomorrow

Roaring

1386 cfs

6/10

Tue

Roaring

1287 cfs

9/10

Wed

Roaring

1336 cfs

6/10

Thu

Roaring

1386 cfs

6/10

Fri

Roaring

1378 cfs

6/10

Sat

Roaring

1378 cfs

6/10

Best window: Tue — roaring flow, sunny (trip score 9/10).

Best time of year: this gauge typically runs highest from mid April to late May, peaking in March.

How we calculate this

This is a transparent outlook, not a precise forecast. We take the waterfall's current flow strength (how it ranks against its historical normal for today, from the nearest USGS stream gauge), carry that ranking forward along the gauge's seasonal curve, and nudge it for forecast rain. Confidence is highest for the next day or two and falls further out. Always check official conditions and your own judgment before visiting — high flows can be dangerous.

Know when to go.

Get a free email alert when waterfalls near Westley hit peak flow. We only send when conditions are worth the trip — no weekly newsletters, no spam.

Is Finnegan Falls Frozen?

Updated about 17 hours ago

Not frozen highs above freezing lately big river, rarely freezes solid

Finnegan Falls is not frozen right now; highs have been above freezing. Yesterday ran 66°F to 50°F.

Days below freezing
0 of the last 14
Current cold streak
0 days
Freezing days ahead
0 of the next 7
Flow
1160 ft³/s

Winter safety. Frozen falls are the one waterfall trip with a documented injury pattern: falling ice, and ice-glazed rock and trail. Wear microspikes, keep well back from the base and from overhangs, and never walk out on ice over moving water.

Estimate from Open-Meteo daily temperatures at the falls, the LiDAR-measured facing direction, and the nearest stream gauge. It is a likelihood, not a report from the trail.

Weather Forecast

The Terrain, Seen by LiDAR

Aircraft-mounted lasers measured this ground to within inches. Trees and buildings are digitally stripped away, leaving the bare shape of the land the water has carved.

Aerial photo of the same ground around Finnegan Falls near Westley, California, for comparison with the lidar view LiDAR bare-earth terrain around Finnegan Falls near Westley, California
Aerial LiDAR bare earth

Drag to compare. The dot marks the waterfall. The frame is about a mile across.

Elevation data: USGS 3D Elevation Program. Aerial imagery: USGS The National Map. Public domain.

Location & Access

Elevation

23 feet above sea level

Coordinates

37.658263° N, -121.230217° W

Land Management

San Joaquin River National Wildlife Refuge CONE

Managed by FWS No Public Access

Additional Information

Nearby Attractions

The refuge's Pelican Nature Trail at 2714 Dairy Road in Vernalis has about 4 miles of interconnected loops and spurs and is open daily from a half hour before sunrise to a half hour after sunset.

Cities near Finnegan Falls

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