Climate intelligence for the great outdoors.
Live snowpack, streamflow, weather, and flood conditions for the whole country, scored, alerted, and mapped. One platform, on your phone and in your browser.
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 is about to throw at you, and where you can head this weekend.
What the snow is doing
Live snow depth and snow-water-equivalent from sensors across every western range, a national snow analysis painted between them, and 24, 48, and 72 hour snowfall forecasts on top.
Explore the snow layer ›What the rivers are running at
Thousands of live streamgauges with real-time flow, plus modeled flow on every river reach in the country, reservoir storage, watershed boundaries, flood zones, and a 15-day flow forecast at every gauge.
Explore the water layer ›The weather that drives it all
Air temperature, last-24-hour precipitation, official warnings for snow, fire, and flood, drought status, and smoke, everything that turns conditions into action.
Explore the weather layer ›Where you can head out
Ski areas, paddle runs, fishing access, campgrounds, boat ramps, and points of interest, each scored for the activity. Tap any pin for the full report, linked to the nearest gauge and weather.
Explore the recreation layer ›Today across the country
A quick read on where the water is moving across the country today. These are the highest flows on the live river network right now.
- Ohio River At Old Shawneetown, Il-Ky259,000 cfsKentucky
- St. Johns River At Jacksonville, Fla.152,000 cfsFlorida
- White River At Batesville, Ar43,800 cfsArkansas
- Mississippi River Below L&D #2 At Hastings, Mn27,700 cfsMinnesota
- Savannah River Near Port Wentworth, Ga25,700 cfsGeorgia
- Mississippi River At St. Paul, Mn23,900 cfsMinnesota
- White River At Calico Rock, Ar23,300 cfsArkansas
- Snake River At Hells Canyon Dam Id-Or State Line19,200 cfsOregon
Follow a drop across the country
Water is one connected system, and Snoflo follows it the whole way down.
Snowpack
Snow telemetry and modeled depth across every western basin, with season-over-season history.
Rivers
Hourly modeled discharge on every reach plus live gauge readings, colored by flow.
Reservoirs
Storage, dam specs, and current levels for the infrastructure that manages the runoff.
The coast
Wave height and energy, wind, surface currents, and live buoys, with replay and forecast.
Six systems, one product
Everything below ships today, on the web and in the iOS app, from the same data backbone.
Live data engine
Snowpack, streamflow, river levels, reservoirs, buoys, avalanche danger, flood monitoring, and weather, refreshed hourly from the nation's official monitoring networks. The same engine powers the map, with modeled flow on every river reach in the country.
The foundationCondition scores
Raw gauge numbers mean nothing to most people. Snoflo grades conditions per activity, so a paddler, an angler, and a skier each get a direct answer for the same place: go now, wait, or pick somewhere else.
Plain answersCustom alerts
Set a threshold on any river, gauge, snow sensor, lake, or resort you care about and get pinged the moment conditions cross it. Flow drops into the runnable window, fresh snow stacks up, a flood stage nears: you know first.
Return every weekTrip recording
Record GPS tracks with photos on iPhone, link them to the river run, trail, or break they happened on, and build a private history of seasons outside. Community route heatmaps show where people actually go.
Your outdoor recordPulse forecasts
Pulse is the forecast engine behind Snoflo. It learns how each river, snowpack, and buoy behaves over years of its own record, then projects where conditions are headed with a 15-day outlook tuned to every individual site.
Meet Pulse ›SnofloAI
Ask in plain English: where should I paddle this weekend, how is the snowpack trending, which lakes near Denver are fishable tonight. SnofloAI answers from the same live data the rest of the platform runs on.
Conversational accessProfessional depth, recreational reach
The same platform answers a site engineer at 9am, a district hydrologist at noon, and a kayaker checking flows for the weekend.
Engineering & response
- Flood zone boundaries with zone class and base flood elevations
- Wildfire hazard potential shading for exposure screening
- Hospitals, shelters, fire and police stations for response planning
- Power transmission lines, cell towers, major roads, and runways
Hydrology & water resources
- Watershed boundaries and principal aquifer extents
- Gauge observations side by side with modeled flow, hourly
- Snow water equivalent, drought index, and precipitation timelines
- Reservoir storage and dam attributes in one tap
Recreation
- Live flows and 15-day forecasts on every named river
- Surf spots with swell partitions, buoys, and wind
- Ski areas, snow depth, and powder timelines
- Campgrounds, ramps, trails, peaks, and parks with conditions attached
Built with the people who use it daily.
"Living in the Front Range, this is the first snow app that does not make me cross-reference three different sites and the local ski-resort blog."
"Push alerts on the gauge that drops me into Section IV. I have not missed a window all spring. Game changer for paddle planning."
"The nearby view is what finally got my non-app friends on board. They tap it once and see everything within an hour's drive."
"Reservoir storage trends and watershed boundaries on one map. I used to bounce between three different agency sites. This saves me hours every week."
"Tapped a fishing access in Idaho and the popup showed the closest gauge, water temp, and what species are in the river. That is a tackle-shop conversation in one screen."
"Set freeze-warning alerts on every weather zone covering my orchard. The push lands earlier than the email I used to wait for. Worth its weight."
Start reading the outdoors.
Snoflo is free to start on the App Store and at snoflo.org. Live conditions, condition scores, and your first alerts cost nothing. Premium unlocks 15-day forecasts, professional map layers, and unlimited alerts.
