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Welcome to Snoflo! Snoflo provides a plethora of analytical tools aimed towards hydrology across the United States (the “Services”). Snoflo and its affiliates provide their Services to you subject to these terms of service, as well as any other guidelines, rules and additional terms referenced herein, and all such guidelines, terms and rules are hereby incorporated herein by this reference (collectively, the “Terms of Service”). By using Snoflo, which is owned and operated by Zero Kelvin LLC. (“Zero Kelvin”, “we” or “our”) and by accessing the Snoflo website located at, and all linked pages owned and operated by Zero Kelvin (the “Site” and, together with the Services, “Snoflo”), you agree to be bound by these Terms of Service. These Terms of Service set out the legally binding terms with respect to your use of, and our provision of, Snoflo. Please read these Terms of Service carefully. Your access to or use of Snoflo constitutes your acceptance of all the provisions of these Terms of Service. If you are unwilling to be bound by these Terms of Service, do not access or use Snoflo.

Snow related data is sourced directly from the Natural Resources Conservation Service (NRCS). The Natural Resources Conservation Service (NRCS) installs, operates and maintains an extensive automated system called SNOTEL. With the majority of the water supply in the West arriving in the form of snow, SNOTEL data on snowpack provides critical information to support the resource management activities of the NRCS and others. Visit the NRCS ( to learn more.

Streamflow related data is sourced directly from the United States Geological Survey (USGS). As part of the National Streamflow Information Program, the U.S. Geological Survey (USGS) operates more than 7,400 streamgages nationwide to provide streamflow information for a wide variety of uses.

Note: Not all river sensors are maintained by the USGS. Rather, many river sensors (across various states) are managed by their own respective state level agencies. For example, in Colorado, there's many river sensors that are maintained by the Colorado Division of Water and Resources. The USGS does not provide visibility into the status of these sensors, rather folks must reference the CO DWR. Although we can't integrate data for every state agency, we do have state level river information for Colorado. This enables users to compare streamflow sites in Colorado regardless of the maintainer (USGS or the Colorado Division of Water and Resources).

Weather related data is sourced from numerous sources including NOAA (National Oceanic and Atmospheric Administration), the Canadian Meteorological Center, the UK Met Office, and the Norwegian Meteorological Institute. Snoflo algorithms analyze these datasets and provide 'tuned' predictions. Snoflo cannot guarantee the accuracy of these forecasting models.

Snow and River Data is updated constantly throughout the day by their respective government organizations. Snoflo provides realtime data based on these continous updates. However, for multiyear historical charts, Snoflo generally analyzes new data once per day; therefore multiyear historical charts are based on daily data (a single datapoint recorded on a daily basis)

It is possible that a sensor may not be reporting valid data for a given day, in this case Snoflo may not provide data for the given sensor.

Snoflo maintains a 5 yr historical lookback period for most sensors; if a user needs more data, please reference the corresponding organizational website for the sensor in question.

Snoflo provides ski reports and fishing reports for many recreational areas and resorts across the nation. Often these areas will have a sensor (NRCS/USGS) on premises and a report can be provided. In other cases, Snoflo algorithms will calculate a report for a given ski area or fishing location based on nearby telemtry from relevant governmental organizations.

Voluntary account alerts may be turned on by default as part of the Service. They may then be customized, deactivated or reactivated by you.Snoflo may add new alerts from time to time, or cease to provide certain alerts at any time upon its sole discretion. Each alert has different options available, and you may be asked to select from among these options upon activation of your alerts service.
Electronic alerts will be sent to the email address you have provided as your primary email address for If your email address or your mobile device’s email address changes, you are responsible for informing us of that change. Anyone with access to your email will be able to view the content of these alerts. At any time you may disable future alerts.
You understand and agree that any alerts provided to you through the Service may be delayed or prevented by a variety of factors.Snoflo does its best to provide alerts in a timely manner with accurate information. However, we neither guarantee the delivery nor the accuracy of the content of any alert. You also agree that Snoflo shall not be liable for any delays, failure to deliver, or misdirected delivery of any alert; for any errors in the content of an alert; or for any actions taken or not taken by you or any third party in reliance on an alert.

You must be 18 or over, or the legal age to form a binding contract in your jurisdiction if that age is greater than 18 years of age, to register as a member of Snoflo or use Snoflo. If you are under the age of 18 or the applicable legal age in your jurisdiction, you can use Snoflo only in conjunction with, and under the supervision of, your parent or guardian who has agreed to these Terms of Service. If you do not qualify, do not use Registration for Snoflo is void where prohibited by applicable law and the right to access the Site is revoked in such jurisdictions. You must be 13 or older to use the Site, in compliance with the Children’s Online Privacy Protection Act (COPPA). By using Snoflo, you represent and warrant that you have the right, authority and capacity to enter into these Terms of Service and to abide by all of the terms and conditions set forth herein. The Site is administered in the United States and intended for U.S. users; any use outside of the U.S. is at the user’s own risk and users are responsible for compliance with any local laws applicable to their use of Snoflo.

In order to use and/or access certain Services, you may be required to register with the Site and to select a password and user name, which shall consist of an email address you own and use (“User ID”). You may also be asked to answer some questions about yourself. If you register, you agree to provide Snoflo with true, accurate, current and complete information, and that you will promptly update such information with any changes. Failure to do so shall constitute a breach of these Terms of Service, which may result in the immediate termination of your account. You may not: (i) enter, select or use a false name or an email address owned or controlled by another person with the intent to impersonate that person; or (ii) use as a User ID a name subject to any rights of a person other than yourself without appropriate authorization. Snoflo reserves the right to refuse registration of, or cancel, a User ID in its sole discretion. You shall be responsible for maintaining the confidentiality of your password and are fully responsible for all activities that occur under your User ID and password. Any User ID and password provided to you for your access to Snoflo shall be for your personal use only. You agree to (a) immediately notify Snoflo of any unauthorized use of your User ID or password at, and (b) ensure that you exit from your account at the end of each session. If you violate any of these Terms of Service, Snoflo may, at its sole discretion, terminate your registration, remove or modify the content that you have contributed, or take any other action that Snoflo determines to be appropriate.

Some parts of the Service are supported by sponsored links from advertisers and display Offers that may be custom matched to you based on information stored in the Service, queries made through the Service or other information.
In connection with Offers, the Service will provide links to other web sites belonging to Snoflo advertisers and other third parties. Snoflo does not endorse, warrant or guarantee the products or services available through the Offers (or any other third-party products or services advertised on or linked from our site), whether or not sponsored, and Snoflo is not an agent or broker or otherwise responsible for the activities or policies of those web sites. Snoflo does not guarantee that the offers made by any particular advertiser or other third party on are actually the terms that may be offered to you if you pursue the offer.

You agree that, without the express written consent of Snoflo, you shall not (and you agree not to allow any third party to):

modify, adapt, translate or reverse engineer any portion of Snoflo;
remove any copyright, trademark or other proprietary rights notices contained in or on Snoflo or in or on any Contributed Content or other material obtained via Snoflo;
except for tools provided through Snoflo, use any robot, spider, site search/retrieval application or other automated device, process or means to access, retrieve or index any portion of Snoflo;
access, retrieve or index any portion of Snoflo for purposes of constructing or populating a searchable database of information;
collect or store personal data or any other information about other users or members of Snoflo (including usernames and/or email addresses) in connection with the prohibited activities described in this paragraph, or for any other purpose other than for your own personal, non-commercial use;
reformat, frame or place pop-up windows over any portion of Snoflo, or otherwise affect the way that Snoflo is displayed;
add or use ActiveX, Java, Javascript, cookies, web beacons or other tracking technologies on Snoflo;
create user accounts by automated means or under false or fraudulent pretenses;
create or transmit unwanted electronic communications such as “spam” to other users or members of Snoflo or otherwise interfere with other users’ or members’ enjoyment of Snoflo;
transmit any viruses, worms, defects, Trojan horses or other items of a destructive nature;
forge headers or manipulate identifiers or other data in order to disguise the origin of any Content transmitted through Snoflo or to manipulate your presence on Snoflo;
use Snoflo to violate the security of any computer network, crack passwords or security encryption codes, transfer or store illegal material including that are deemed threatening or obscene;
copy or store any Content offered on Snoflo for other than your own personal use;
use any device, software or routine that interferes with the proper working of the Snoflo or otherwise attempt to interfere with the proper working of Snoflo;
take any action that imposes, or may impose in our sole discretion, an unreasonable or disproportionately large load on our IT infrastructure; or
use Snoflo, intentionally or unintentionally, to violate any applicable local, state, national or international law.

Unauthorized access to Snoflo is a breach of these Terms of Service and a violation of law. You agree not to access the Site by any means other than through the interfaces that we provide to you for accessing the Site. Zero Kelvin LLC. may at any time, without prior notice and at our sole discretion, remove any post, terminate the membership of, or take any other appropriate action against any person who violates the above provisions. Illegal or unauthorized uses of Snoflo will be investigated and subject to appropriate legal action, including, without limitation, civil, criminal and/or injunctive redress.

The Site (including, but not limited to, text, photographs, graphics, video and audio Content) is protected by copyright as a collective work or compilation under the copyright laws of the United States and other countries. All individual articles, Content and other elements comprising Snoflo are also copyrighted works. Except for the Content submitted by members or users, Snoflo and all aspects thereof, including all copyrights, trademarks, and other intellectual property or proprietary rights therein, is owned by Zero Kelvin LLC. or its licensors. You acknowledge that Snoflo and any underlying technology or software used in connection with Snoflo contain Zero Kelvins’s proprietary information. You may not modify, reproduce, distribute, create derivative works of, publicly display or in any way exploit, any of the content, software, and/or materials available on Snoflo, in whole or in part. Except as expressly and unambiguously provided herein, Zero Kelvin LLC. and its suppliers do not grant you any express or implied rights, and all rights in Snoflo not expressly granted by Zero Kelvin LLC. to you are retained by Zero Kelvin LLC.

Trade names, trademarks and service marks of Zero Kelvin LLC. include, without limitation, SNOFLO HYDROANALYTICS™ and all associated logos. All trademarks and services marks on the Site that are not owned by Zero Kelvin LLC. are the property of their respective owners. Nothing contained on the Site should be construed as granting, by implication, estoppel or otherwise, any license or right to use any Zero Kelvin LLC. trade names, trademarks or service marks without the express prior written consent of Zero Kelvin LLC.

You agree and understand that these Terms of Service, and itself, may be modified by Zero Kelvin LLC. at any time without prior notice, and such modifications will be effective upon Zero Kelvin's posting of the new terms and/or upon implementation of the new changes on the Site. You agree to review the Terms of Service periodically so that you are aware of any modifications. Your continued use of after any modifications indicates your acceptance of the modified Terms of Service. Unless expressly stated otherwise by Zero Kelvin LLC., any new features, new services, enhancements or modifications to implemented after your initial access to shall be subject to these Terms of Service.

If you have questions regarding these Terms of Service, please contact us at