Moab Water Levels: A Month-by-Month Guide to the Colorado River Rafting Season

UPDATED JUNE 24, 2026

The Question We Get Every Spring

Each spring, the same questions start rolling into our reservations line:

“How are the Moab water levels looking this year?”

“I heard it’s a low snowpack year — is rafting still worth it?”

“Should I wait for a big-water year to book?”

We get it. Headlines about Lake Powell, snowpack percentages, and Colorado River drought are everywhere. It’s natural to wonder whether this is the right year to book a Moab rafting trip — or whether you should hold off.

Here’s the short answer, distilled from twenty-plus years of guiding the Colorado River through Moab: rafting in Moab is fantastic at every water level. Rapids change. Beaches change. The speed of the river changes. But the trip — the canyons, the sandstone towers, the wildlife, the swimming, the laughter, the lunch on a sunny beach — that’s the same in May, in August, in a high-water year, and in a low-water year.

This guide breaks down what Moab water levels actually mean for your rafting trip, how the Colorado River changes from May through early September, and why you can book with confidence no matter what the snowpack forecast looks like.

• The Moab Stretch of the Colorado River, Explained
• Understanding CFS: What the Numbers Actually Mean
• What About Low-Snowpack Years?
• Moab Rafting Month by Month: May Through Early September
• So What Should You Actually Do?
• Ready to Book?
• FAQ: Moab Water Levels and Colorado River Rafting

The Moab Stretch of the Colorado River, Explained

Before we talk numbers, it helps to know exactly which piece of river we’re discussing. The “Moab Daily” — the section most Moab outfitter runs, including Red River Adventures — is the Fisher Towers section of the Colorado River. It’s the stretch upstream of Moab that flows past Castle Valley, beneath Castleton Tower and the Priest and Nuns, and through a deep red-rock canyon back toward town.

Day trips put in at Hittle Bottom or Onion Creek and take out at Take-Out Beach, covering roughly 13 miles of river. Two-day trips often start farther upstream at Dewey Bridge, adding another seven miles or so.

A few important things about this section:

• It’s mostly unregulated. Unlike rivers below big dams, no single reservoir controls the flow on the Fisher Towers section. The river rises and falls naturally with snowmelt, weather, and tributaries.
• It’s rated Class II, with occasional Class III in spring high water. That means fun, splashy, beginner-friendly waves — not big, technical, scary whitewater.
• The named rapids are reliable year-round. Onion Creek, Professor Creek, Cloudburst, White’s, Rocky, and Big Bend all run all year round. They just look a little different at 25,000 CFS than at 2,500 CFS.
• The scenery never changes. Castleton Tower, Sister Superior, the Convent, the Fisher Towers themselves — these landmarks have looked exactly the same for thousands of years. Water level has zero impact on the views.

For real-time data, the gauge most Moab guides watch is USGS 09180500 — Colorado River near Cisco, UT. It sits just upstream of the Fisher Towers section and gives the most accurate read on what we’re floating.

Understanding CFS: What the Numbers Actually Mean

CFS stands for cubic feet per second — the volume of water passing a fixed point each second. One cubic foot is roughly the size of a basketball. So 5,000 CFS means about 5,000 basketballs of water rolling past every second. It’s a useful way to picture flow, but it doesn’t tell you everything about the experience.

For rafting on the Moab Daily, here’s a rough framework:

• Below 4,500 CFS — Low water. Smaller, splashier, playful rapids. Warmer water. More exposed beaches. Excellent for swimming and family trips.
• 4,500–15,000 CFS — Medium water. A balanced experience with lively Class II waves, occasional Class III features.
• 15,000-25,000 CFS — Healthy spring flow. Faster current, bigger waves, more push, 
• Above 25,000 CFS — High water. Fast and exciting. Rapids are bigger and require more attention. Minimum age limits sometimes adjust upward during peak runoff.

The Cisco gauge has historically ranged from a low of about 1800 CFS in late summer to peaks above 50,000 CFS in record snowpack years like 1983 and 1984. The vast majority of our trips happen in the 2,500–10,000 CFS range — and every one of them is a great day on the river.

What About Low-Snowpack Years?

This is the worry we hear most. It’s worth addressing directly.

In a low-snowpack year (like the 2025–2026 winter, when Upper Colorado River Basin snowpack ran well below normal), peak runoff in late May and June is lower than average, and the river settles into its summer baseline earlier. Instead of peaking at 15,000–30,000 CFS, peak might top out closer to 6,000–10,000 CFS. By mid-July, flows might be hovering around 1,500–2,500 CFS instead of 3,000–5,000.

Here’s what that doesn’t change:

• The trip still runs daily, every day of the season.
• The rapids are still there. They’re smaller, playful, and every named rapid still produces splashes and laughs.
• The scenery is identical.
• Swimming gets better, not worse — warmer, slower water means more time floating in the river itself.
• Side hikes and beach lunches are often even more enjoyable, with bigger beaches exposed and more swimming.
• Wildlife sightings (bighorn sheep, herons, beavers, the occasional river otter) actually tend to increase in lower water.

In our two-plus decades on this river, some of our highest-rated trips have happened in lower-water years. The river meets you where you are. A six-year-old taking their first paddle raft trip in 2,000 CFS is having every bit as much fun as a teenager bouncing through a 12,000 CFS wave train. The Moab Daily is one of the most forgiving and fun rafting sections in the American West, and that’s true regardless of CFS.

Moab Rafting Month by Month: May Through Early September

Here’s a realistic look at what your trip will feel like depending on when you visit. Specifics vary year to year — these are the patterns we see in a typical season.

April: Cool, Clear, and Wide Open

April is the official kickoff of the Moab rafting season. Snowmelt from the Colorado Rockies starts feeding the river in earnest. In an average year, flows climb steadily through the month from a few thousand CFS into the 8,000–15,000 CFS range. In a low-snowpack year, May might top out lower — and that’s totally fine.

• What it feels like: The river is cooler (often 50–60°F), the air temperature is mild (highs in the 70s to mid-80s), and the cottonwoods along the river are fully leafed out and electric green. Wildflowers pop along the side canyons.
• The rapids: Lively. Faster current, more push, splashier waves. In stronger snowmelt years, a few Class II features bump up to easy Class III.
• Who it’s best for: Anyone who wants the most “whitewater” feel of the season. Photographers love April for the green-against-red-rock contrast.
• What to bring: Layers appropriate for the forecast, a light rain jacket or splash top, and clothes you don’t mind getting wet. Mornings can be cool.

May/June: Peak Flow Meets Peak Desert

May and June is when the Colorado River through Moab usually hits its annual peak. In a normal year, the Cisco gauge peaks somewhere between late May and mid-June. After that, flows start to drop steadily as snowmelt tapers off.

• What it feels like: Big-river energy. The Colorado is wide, fast, and powerful in early June. By the last week of June, flows are dropping noticeably and the desert heat is settling in (highs creeping into the 90s).
• The rapids: This is the year’s most exciting whitewater on the Moab Daily. Onion Creek, Rocky, and White’s all show their biggest faces in June. Splashes are bigger, the current does more of the work, but your paddle crew has to work together to maximize the fun. 
• Who it’s best for: Anyone who wants the river at it’s most dynamic stage adventure-seekers, families with kids of all ages, even those new to rafting are welcome. Because the river is wide with runoff we can tailor the trip by hitting or avoiding the larger features depending on what’s most appropriate. 
• What to bring: Sun protection becomes critical. Sunscreen, a hat, sunglasses with a strap.

July: The Sweet Spot for Families

By July, peak runoff is in the rearview mirror and the river is settling into summer mode. Flows typically drop into the 2,000–6,000 CFS range in a normal year.

• What it feels like: Hot, sunny, and warm. Air temperatures regularly hit the high 90s, and water temperatures climb into the upper 60s and low 70s — perfect for swimming. Beaches start to widen as the river drops.
• The rapids: Still fun, still splashy, but more relaxed. The river feels less pushy, which means more time to chat, swim, paddle inflatable kayaks, and enjoy the canyon.
• Who it’s best for: Families with younger kids, first-time rafters, multi-generational groups, and anyone who values warm water and lazy floating between rapids. July is when the river feels most like a giant red-rock lazy river with bonus splashes.
• What to bring: Quick-dry clothing, a sun shirt, and shoes, sandals or flip flops you don’t mind getting wet. 

August: Warm Water and Wide Beaches

August is peak summer in Moab. The river is at its most user-friendly, and the desert is doing its thing — hot days, cool evenings, occasional afternoon thunderstorms that paint the canyon walls dark red and bring spectacular waterfalls down the cliffs.

• What it feels like: This is bathwater rafting. Water temperatures are at their warmest of the year. Flows are typically in the 1,500–4,000 CFS range, sometimes lower in dry years. Sandy beaches are huge, perfect for lunch stops and swimming.
• The rapids: Smaller, splashier, and still genuinely fun. Smaller features make their appearance. Dog Hole, Dead Dog Hole and Escalator, smaller features not on the river map, produce waves and laughs.
• Who it’s best for: Anyone who wants to see the most beautiful part of Moab, likes swimming, and warm-water comfort. This is the absolute best month for guests who are nervous about cold water or big rapids.
• What to bring: Same as July. We will watch for monsoon weather — short, intense storms can briefly bump flows up.

Early September: The Best-Kept Secret

The first week of September is one of our favorite times of the year to be on the river — and one of the most under-the-radar.

• What it feels like: The desert is still warm but crowds start to thin out as kids return to school. Water is still warm, beaches are still wide, and the light starts to take on that golden, slanted quality that photographers chase.
• The rapids: Similar to August — playful, manageable, fun. Flows continue their late-summer plateau.
• Who it’s best for: Travelers with flexible schedules, couples, photographers, and anyone who wants the quintessential Moab rafting experience without peak-season crowds.
• What to bring: A light layer for the morning, the same warm-weather kit for the rest of the day.

So What Should You Actually Do?

If you’ve read this far, here’s our honest, no-spin take:

Book the trip that fits your schedule, not the trip that fits your snowpack expectations. The Moab Daily section of the Colorado River delivers a great experience every single month from May through September. Pick the dates that work for your travel plans, your kids’ summer break, your work calendar — the river will show up.

If you have flexibility and a specific kind of experience in mind:

• Want maximum splash and adventure? Book late May through mid-June.
• Want warm water, easy swimming, and a relaxed family vibe? July, August, or early September.
• Want fewer crowds and a laid back vibe? Late August through early September.

And if it’s a low-snowpack year? Come anyway. Truth is that the Colorado River basin has been in a drought since 2000. The best days we’ve ever had on this river have been in years when the headlines were screaming about drought. Lower water means warmer swims, lazy lunches on bigger beaches, and a river that moves at the speed of conversation. That’s not a downgrade or a consolation prize. That’s just a different flavor of the same incredible canyon.

Ready to Book?

Red River Adventures has been guiding the Fisher Towers section of the Colorado River since 2003. Our small paddle rafts (max 8 guests per boat) are the most engaging way to experience this stretch, and our guides know every splash, every eddy, every side canyon, and every story this canyon has to tell.

Explore our Fisher Towers Rafting Tours in Moab — full and half-day options available daily from spring through fall. Or check out everything we offer on the Moab rafting page to find the trip that fits your group.

Have questions about current water levels or what to expect on your trip date? Give us a call at (877) 259-4046. We’re happy to talk rivers anytime.

FAQ: Moab Water Levels and Colorado River Rafting

What gauge should I check for Moab water levels? The most relevant gauge is USGS 09180500, “Colorado River near Cisco, UT.” It sits just upstream of the Fisher Towers section and gives the most accurate read on what flows through the Moab Daily.

What’s a normal CFS for the Colorado River through Moab in summer? In a typical year, expect 8,000–125,000 CFS in late May and early June, dropping to 3,000–6,000 CFS through July, and 1,500–4,000 CFS in August. Low-snowpack years run lower across the board; big-snowpack years can peak above 2030,000 CFS.

Is it worth rafting in Moab during a low-water year? Absolutely. Rapids are smaller but still splashy and fun, scenery is identical, water is warmer for swimming, beaches are wider, and wildlife sightings often increase. Many guests prefer low-water trips for the relaxed pace.

When does the Colorado River peak through Moab? In an average year, peak flow occurs between mid-May and mid-June. The exact peak depends on Rocky Mountain snowpack and how fast the snow melts.

Is the Fisher Towers section dam-controlled? No. This stretch is essentially unregulated, meaning flows rise and fall naturally with snowmelt, weather, and tributary contributions. That’s part of what makes it such a wild and beautiful section of river.

What’s the minimum age for Moab rafting? On Red River Adventures’ Fisher Towers rafting trips, the minimum is 5 years old and 40 pounds. During peak runoff in late May and early June, age minimums may adjust upward — call to confirm for your specific date.