RiverApp vs Whumpf

Get quick access to the latest river levels, flows and conditions across the US and more than 20 other countries worldwide. RiverApp gives you access to one of the world’s most comprehensive hydrometric datasets, with data from over 40,000 monitoring stations. Whether you kayak, canoe, packraft, paddleboard, fly fish, surf rivers, manage irrigation, operate hydropower infrastructure or monitor flood risk, RiverApp helps you stay informed with reliable, easy-to-read river data. FREE FEATURES ‣ Current water levels and flows for over 20,000 rivers ‣ Water temperature data where available ‣ Detailed maps of hydrometric stations and whitewater sections ‣ Custom alerts for each station when a defined level or flow is reached ‣ Favourite stations and whitewater sections for quick access to the latest readings and conditions FREE FEATURES FOR WHITEWATER SPORTS ‣ More than 4,000 referenced whitewater sections ‣ Section conditions based on current water level or flow ‣ Detailed section maps with quick access to put-in and take-out points ‣ Hazards, rapids and other points of interest, including photos where available ‣ Information on difficulty, length and average gradient ‣ Community-based addition and editing of whitewater sections RIVERAPP PREMIUM Unlock additional tools for deeper river monitoring and trip planning: ‣ Historical water level and flow data going back several years ‣ Forecasts for selected stations ‣ Satellite map layers from multiple providers, with comparison tools ‣ Customizable Home Screen Widgets to keep your favourite river gauges visible at a glance ‣ Monthly streamflow statistics to understand seasonal variations and plan river trips at the right time and place DATA SOURCES RiverApp brings together data from over 100 official and public hydrometric sources worldwide, including, among others: NVE California Data Exchange Center Government of Canada — Wateroffice USGS NOAA PEGELONLINE — www.pegelonline.wsv.de HVZ Baden-Württemberg HDN Bayern Kanton Bern Ennskraftwerke Land Kärnten Land Niederösterreich Regione Piemonte HVZ Rheinland-Pfalz Český hydrometeorologický ústav HVZ Sachsen-Anhalt Land Salzburg Scottish Environment Protection Agency Slovak Hydrometeorological Institute Agencija Republike Slovenije za okolje HWZ Steiermark BAFU HNZ Thüringen Land Tirol Shoothill Vigicrues Serveur de données hydrométriques temps réel du bassin Rhône-Méditerranée Land Vorarlberg Bureau of Meteorology — Australia DISCLAIMER RiverApp is an independent application and is not affiliated with the listed organizations unless explicitly stated. RiverApp and the listed data providers shall not be held liable for any errors, omissions, delays or interruptions in the information provided, nor for any loss, injury or damage of any kind resulting from its use. End-user license agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Whumpf puts the avalanche forecast for every zone you care about on one screen, side by side, with the weather to check it against. When you've picked where to go, Heading Out leaves a trip plan with the people at home and reminds them if you don't check in. COMPARE ZONES ACROSS CENTERS - Pick zones from any Alaska avalanche center and see the danger at all three elevation bands next to each other. From Anchorage that means Hatcher Pass, Turnagain and Valdez at a glance. - Avalanche problems with their likelihood, size, and the aspects and elevations they're on, plus the forecaster's bottom line. - Nearby weather stations and SNOTEL sites: temperature, wind and gusts, new snow and water content over 24 or 72 hours, next to the NWS point forecast. - Recent field observations from the center for each zone. - Page back through the last few days to see how the picture changed. THE FORECAST, EVERY MORNING - Each morning you get a notification for each of your saved zones with the danger at all three elevation bands and a line of station weather. - The full forecast downloads with the notification, even if the app was closed, so it's already on your phone when you lose service at the trailhead. - Your saved zones are stored on your phone and refreshed in the background. HEADING OUT: LEAVE A TRIP PLAN Before you go, Whumpf builds the trip plan a search and rescue team asks for: where you parked, with a map pin; your route and backup plans; who's in the party; what you're wearing and carrying; your vehicle; your satellite messenger's share page; and medical details. - Fill in your profile once and every plan after that is prefilled. Pick the area, set your times, choose your contacts, send. - Your contacts get a link to a page that opens on any phone, no app needed, with everything in the order a rescuer will ask for it and who to call. - Set a back-by time and a worry-by time. If you haven't checked in by then, Whumpf emails your contacts and calls them with an automated message. - Running late? A contact can push the worry-by time back from the page. Whoever hears from you, or calls for help, marks it there and the other contacts see it. - Optional: share your live location with those contacts for that trip only. It stops when you check in, and the trail is deleted with the plan. - Check in with one tap when you're back. FILE AN OBSERVATION Write up what you saw in the field, with photos and the location, and send it to your avalanche center through the center's own form, filled in with what you wrote where the form allows. Or email it with a PDF copy and your photos, or just keep the PDF. No account, no sign-in, free. Forecast data comes from the National Avalanche Center and its member centers. Always read the full forecast from your local avalanche center before making travel decisions. Whumpf does not replace the source forecast. It never contacts rescuers itself: your contacts decide when to call, and their page tells them how. Whumpf is the sound a collapsing weak layer makes underfoot: one of the clearest signs the snowpack is unstable.