Climate intelligence for the great outdoors.
Real-time snowpack, streamflow, weather, and flood data from 800+ NRCS SNOTEL stations and 10,000+ USGS gauges — on one beautiful, fast map.
What's happening across the country today
The nation faces a critical hydrological divide as mid-June 2026 reveals extreme water storage disparities threatening both urban centers and agricultural regions. In Texas and Oklahoma, reservoir levels have reached alarming extremes—Lake Eucha sits at nearly 1 million percent of normal capacity while multiple Texas reservoirs including Toledo Bend (25 times normal), Livingston (12 times normal), and Lake Tawakoni (double capacity) face unprecedented overflow conditions following Tropical Rainstorm Arthur's landfall. This deluge has triggered flash flood warnings across the Southeast, with the Ohio River at Old Shawneetown cresting at 259,000 cubic feet per second and Arthur's remnants hammering Louisiana, Kentucky, Indiana, and the Cincinnati metro area with dangerous flooding and tornado activity that has closed major interstate arteries including I-75. Conversely, severe drought grips the Southern Plains and Southwest—Kansas reservoirs at Tuttle Creek, Milford, and Perry are running at barely half capacity, while Texas's Choke Canyon, Eagle Mountain, and Bridgeport reservoirs sit at 28%, 27%, and 39% of normal levels respectively, threatening municipal water supplies for Fort Worth and surrounding communities.
**Critical Impacts:**
- **Immediate Flood Threat**: Arthur's tropical moisture has inundated the Gulf Coast through the Ohio Valley, with the St. Johns River in Jacksonville flowing at 152,000 cfs and flash flooding closing major highways; New Orleans metro area experiencing tornado touchdowns and power outages
- **Severe Drought Emergency**: Kansas and North Texas face critical water shortages with reservoir storage down 50-70% below normal, jeopardizing agricultural irrigation and municipal supplies for millions
- **Extreme Reservoir Conditions**: Eastern Texas and Oklahoma reservoirs at catastrophic overflow levels (up to 25x normal) while Arizona's Bartlett and Horseshoe reservoirs sit at 69% and 60% of normal capacity
- **High Flow Recreation Hazards**: White River system in Arkansas running 2-3 times normal flows; Snake River at Hells Canyon Dam flowing at 19,200 cfs, creating dangerous conditions for anglers and boaters
- **Infrastructure Strain**: Lake Havasu on the California-Arizona border holding 12 times normal storage, raising concerns about Colorado River system management amid Southwest drought conditions
Every layer that matters,
updated as the day unfolds.
Each layer is built around a real question — what the snow is doing, what the rivers are running at, what the weather's about to throw at you, where you can head this weekend.
What the snow is doing
800+ SNOTEL stations with depth and SWE history, NOHRSC analysis painted across every western range, and 24/48/72‑hour snowfall forecasts on top.
What the rivers are running at
10,000+ USGS streamgauges with live cfs, reservoir storage, watershed boundaries, FEMA flood zones, and a 15‑day flow forecast at every gauge.
The weather that drives it all
Air temperature, last‑24h precipitation, NWS warnings (snow / fire / flood), the drought monitor, and smoke advection — everything that turns conditions into action.
Where you can head out
Ski areas, paddle runs, fishing access, campgrounds, boat ramps, points of interest. Tap any pin for the full report linked to nearest gauge and weather.
From the first check
to the trip recap.
Record, review, get alerted, and save — every feature runs on the same live climate & hydrology data, so the spot you track always carries the conditions that matter.
Record every outing with live tracking.
Track your route, distance, and elevation by GPS — then relive it with the snow, flow, and weather captured along the way. Keep it private or share it.
- Route, distance, elevation & moving time
- Conditions logged at the start of every trip
- Turn any recorded trip into a verified review in one tap
Real reports from people just there.
Rate a spot, tag the conditions, add photos. Every review is stamped with the live weather and flow from the visit — and verified by location.
- Condition tags tuned to each activity
- Location-verified visit badge
- Photos & a star rating that follow the whole trail
Get pinged when conditions line up.
Set a threshold on any spot — optimal flow, fresh snowfall, a temperature swing — and Snoflo pushes you the instant the gauges cross it. Plus live NWS warnings for your areas.
- Streamflow & snowfall thresholds
- National Weather Service watches & warnings
- Tuned per spot, delivered in real time
Keep every spot you love in one place.
Save rivers, ski areas, trails, and campgrounds to a single list that always shows current conditions — so your next trip is one tap away.
- One list across every activity
- Live conditions on every saved spot
- Syncs with your alerts and the map
Built for the way you get outside
From dawn‑patrol pow runs to flood preparedness, every workflow has its own dedicated tools, paired with the data you came for.
Find the freshest snow.
SNOTEL stations across every western range, NOHRSC analysis fields, ski resort snow reports, and 72‑hour snowfall forecasts. Set an alert on your home mountain.
- 800+ SNOTEL stations w/ depth + SWE history
- Resort snow reports + new‑snow last 24 hours
- Avalanche forecasts overlay
- Push alerts on fresh snow thresholds
Catch the river at its sweet spot.
Every USGS gauge, paddle run on the Wild & Scenic Rivers system, fishing access, boat ramps, and a 15‑day flow forecast for your home run.
- 10,000+ USGS streamgauges, live cfs
- Wild & Scenic Rivers paddle runs with class ratings
- Surge alerts for rapid‑rise warnings
- Weather + flow forecast at every put‑in
Find the bite. Skip the bust trip.
Every fishing access on the angling map, paired with the closest streamgauge, water temp where available, fish species index, and the boat ramp / put‑in nearby.
- Fishing access points + paired gauge data
- Fish species guide for every state
- Boat ramps + amenities
- Weather + recent flow trend at every spot
Know your basin. Plan ahead.
Reservoir storage levels, percent‑of‑normal across every state, watershed boundaries, drought monitor, and historical context for every gauge in your district.
- Reservoir storage trends + percent‑of‑normal
- Watershed (HUC8) overlays
- Drought + flood monitor
- Historical context on every gauge
Built with the people who use it daily.
"Lives in the Front Range, this is the first snow app that doesn't make me cross-reference NRCS, NOHRSC, and the local ski-resort blog."
"Push alerts on the gauge that drops me into Section IV. I haven't missed a window all spring. Game changer for paddle planning."
"The Nearby tab is what finally got my non-app-people friends on board. They tap it once and see everything within an hour's drive."
"Reservoir storage trends + watershed boundaries on one map. I previously had to bounce between three USBR sites. This saves me hours every week."
"Tapped a fishing access in Idaho, popup showed the closest gauge, water temp, and what species are in the river. That's a tackle-shop conversation in one screen."
"Set freeze-warning alerts on every NWS zone covering my orchard. The push lands earlier than the email I used to wait for. Worth its weight."
Download Snoflo for iPhone
Free. No sign‑up required to browse the map. Save favorites and set push alerts with a free account.
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