<Terms of use>
● Rausu Town Web Hazard Map (hereinafter “this Website”) is a website that users can access on their computers and smartphones to browse predicted danger points, etc. for natural disasters such as tsunami, flooding, and sediment disasters in Rausu Town.
● The support browser for this website conforms to the "Location Guide Service" provided by Zenrin DataCom Co., Ltd. Other browsers can be used to display this website, but some functions may be limited.
● Data on each location concerning hazards, features, administrative districts, etc. on this site are outlined for public disclosure only and may have errors.
● All hazard location data on this site was predicted based on certain conditions, and there is a possibility that it may exceed the prediction at the time of actual disaster.
● For the maps displayed on the background of this site and other map contents, follow the terms (i.e. Terms and Conditions) of the site guide. In addition, the map content does not indicate the use of land or specific boundaries of the land.
● The aerial photograph used on this site is the one taken by the Geographical Survey Institute. Regarding its terms of use, it complies with those of the Geographical Survey Institute.
<Tsunami Information>
●Tsunami disaster hazard zones are areas where there is a risk of harm to the lives or bodies of residents in the event of a maximum-class tsunami, and are designated by prefectural governors as areas where a warning and evacuation system should be particularly established to enable people to "escape" from a tsunami in order to prevent human disasters caused by tsunamis. The information on tsunami disaster hazard zones on this site was designated by Hokkaido on January 30, 2024.
●The reference water levels, which are announced when areas are designated, clarify the height at which one is safe from a tsunami, serving as a guide for efficient development of evacuation facilities and thus enabling highly effective evacuation measures.
●The tsunami simulation conditions are selected based on presumed earthquake tsunami using the tsunami fault model (Chishima Trench Model) established by a national government study group. The calculation conditions are as follows.
・Presumption of an earthquake of the largest class (M9.3) occurring off the coast of Tokachi and Nemuro.
・Water level: In sea areas and at mouths of rivers, the average high tide level* is used. In river areas, the water level during times of normal water flow is used.
・Crustal movement: For sea areas, uplift and subsidence are considered; for land areas, only subsidence is considered.
・Structures: Damage to various facilities caused by earthquakes or tsunamis is considered. Additionally, sluice gates and land locks are treated as open except for facilities that are earthquake-resistant, automated, or always closed. They are assumed to be “destroyed” at the point when the tsunami begins to overflow, and their state after the destruction is assumed to be “nonexistent”.
*The value obtained by dividing the total during the period by the number based on the annual average of the highest tide level observed 2 days before and 4 days after the new moon and full moon of each month.
● Note that the actual tsunami may exceed this assumed tsunami inundation depth because the tsunami is a natural phenomenon and involves uncertainty.
<Sediment Disaster Information>
●Based on the Act on Sediment Disaster Countermeasures for Sediment Disaster Prone Areas (commonly known as the "Sediment Disaster Prevention Act"), Sediment disaster warning areas ("yellow zones") and sediment disaster special warning areas ("red zones") are designated by Hokkaido Prefecture as areas where there is a risk of harm to residents in the event of cliff failure or debris flows.
●This Website was created for the purpose of providing information for evacuation behavior and activities when there is a risk of sediment disasters due to heavy rain, etc. by displaying areas that are at risk of sediment disasters, which lets residents know when that risk is present in areas near their residences.
<Information on Flooding>
● This site does not show flooding caused by rainfall exceeding the predicted value, storm surge or in-water. Please exercise caution in areas that are not colored.
●Please check the information below, which has been released by Hokkaido Prefecture in accordance with the partial revision and enforcement of the Flood Control Act on May 20, 2015.
●The presumed inundation area is the area specifying the range and depth of inundation expected at the time of river flooding in the event of rainfall amount and flow rate of the maximum presumed scale.Residents living near rivers or in areas with deep inundation should pay close attention to rainfall conditions, as flooding is possible even in cases when the amount of rainfall is less than expected.
The estimated rainfall for each river basin, upon which the calculations are based, is as follows.
【Courtesy of Kushiro General Subprefectural Bureau Hokkaido】
| ○Rausu River | ： 639mm total rainfall in 24hour |
| ○Chinishibetsu River | ： 153mm total rainfall in 1hour |
| ○Shunkarikotan River | ： 172mm total rainfall in 2hours |
| ○Uebetsu River | ： 174mm total rainfall in 2hours |
【Calculated by Rausu Town】
| ○Rusa River | ： 130mm total rainfall in 1hour |
| ○Shouji River | ： 130mm total rainfall in 1hour |
| ○Kennebetsu River | ： 130mm total rainfall in 1hour |
| ○Chienbetsu River | ： 130mm total rainfall in 1hour |
| ○Mosekarubetsu River | ： 132mm total rainfall in 1.02hours |
| ○Okkabake River | ： 142mm total rainfall in 1.15hours |
| ○Sashirui River | ： 134mm total rainfall in 1.06hours |
| ○Hashikoi River | ： 130mm total rainfall in 1hour |
| ○Chitorai River | ： 132mm total rainfall in 1.02hours |
| ○Tachiniusu River | ： 130mm total rainfall in 1hour |
| ○Tobiniusu River | ： 130mm total rainfall in 1hour |
| ○Matsunori River | ： 130mm total rainfall in 1hour |
| ○Tatsukaruushi River | ： 130mm total rainfall in 1hour |
| ○Shojin River | ： 130mm total rainfall in 1hour |
| ○Ponshunkarikotan River | ： 142mm total rainfall in 1.14hours |
| ○Ponhoromoe River | ： 130mm total rainfall in 1hour |
| ○Horomoeozawa River | ： 130mm total rainfall in 1hour |
| ○Rikushibetsu River | ： 146mm total rainfall in 1.53hours |
| ○Orumappu River | ： 130mm total rainfall in 1hour |
＜Information about Storm surge＞
●The storm surge inundation area is an area designated by the prefectural governor in accordance with the Flood Control Act, which defines the range of potential flooding due to storm surges and the expected water depth if flooding occurs. The purpose of this notice is to inform townspeople of the risk of flooding if the largest conceivable storm surge occurs on the coast or in rivers, and to encourage them to take measures such as evacuation.
●The expected flooding due to storm surges is outlined below.
・We are assuming the largest possible typhoon and low pressure system.
・Flooding due to inland water caused by rainfall is not taken into consideration.
※The expected scale is as follows:
１．Expected typhoon
・Central pressure ： 950hPa（Muroto Typhoon-level storm expected）
・Maximum equilibrium wind speed radius ： 75km（Assuming an Ise Bay typhoon-level storm）
（The maximum wind speed radius is the distance from the center of a typhoon to the point where the wind speed is at its maximum around the typhoon.）
・movement speed ： 73km/h（Assuming an Ise Bay typhoon-level storm）
２．Expected low pressure
・scale：Assuming the low pressure that caused a significant storm surge in Nemuro in 2014
(The largest cyclone recorded in Japan since 1996 in Hokkaido, Tohoku, and Hokuriku regions）
・route：The course was set with the actual path of the low pressure system as the center, with parallel shifts of 10 and 20 km in eight directions.
３．Tidal conditions
The mean synodic high tide level (daily average of the maximum high tide level for each month, set at +0.7m above the mean sea level of Tokyo Bay) plus the abnormal tide level (a state in which the mean tide level for a certain period is +0.128m higher than normal)
●Things to keep in mind
・The maximum storm surges were set based on current scientific knowledge and on actual typhoons and storm surges that have occurred in the past. This does not necessarily mean that even larger storm surges will not occur. Furthermore, they do not take into account future changes in meteorological and oceanographic conditions, such as sea level rise due to climate change caused by global warming.
・If there are changes to the various assumed conditions regarding the flooded areas and flood depths since the time of the study, such as changes to the topography or the construction of buildings, there is a risk that flooding will occur outside the flooded areas or that the flood depth will increase.
・If stairs, elevators, ventilation ducts, etc. leading to the basement are located in a flooded area, the underground space may be flooded.
・There is a possibility that the figures may be revised in the future based on detailed examination of the figures, revision of local disaster prevention plans, and improvements to labeling.
<Map Terms of Use>
Be sure to read the following terms before using map data ("data") provided by this site. The following agreement is the condition of a contract concerning the use of data between users of this site ("users") and Rausu Town. Please use this data only if you agree to all these Terms of Use. If the user uses the map, it is assumed that he or she agrees to all Terms of Use.
Article 1 (copyright and license of data)
1. All data is copyrighted under and belongs to Zenrin Co., Ltd. or a third party who is granted rights to it.
2. Rausu Town grants the following rights to this data to users within the scope of private use stipulated by the Copyright Law of Japan (著作権法). The user does not acquire any rights other than these for the data:
(1) Viewing the data displayed on this website with a Web browser.
(2) Printing out the data displayed on this website on a paper medium (data printed out under this medium is hereinafter referred to as "reproduction result").
Article 2 (Parameters to be observed)
The user shall comply with the following parameters:
(1) Reproduction (including printing), posting, extraction, processing, alteration, adaptation, transmission, etc. of all or part of the data, regardless of the method unless explicitly permitted in the preceding article is forbidden.
(2) Regardless of whether it is paid or not, the data (including all or part of copies, output, extracts and other usages) of data, regardless of assignment, permissions of use, transmission or any other method, may not be used by a third party.
Article 3 (Warranty)
If this site does not necessarily satisfy the purpose or requirement of the user, Rausu Town does not claim responsibility for exchanging, repairing, repayment of charges and other responsibilities (even if they exist).
Article 4 (Suspension, termination, etc. of this site)
1. Rausu Town can temporarily suspend all or part of this service temporarily when maintaining and inspecting this site.
2. When Rausu Town falls under any of the following items, it is possible to temporarily suspend the operation of this site without notifying the user in advance.
(1) In case of urgent maintenance and inspection of this site.
(2) When the operation of this site becomes impossible due to accidents such as fire and blackouts, natural disasters such as earthquakes and floods, war, riots, labor disputes, etc.
(3) In the case that Rausu Town decides the temporary interruption of management of this site is necessary due to operational or technical reasons.
(4) When this site can not be operated due to other obstacles, etc.
Rausu Town reserves the right to terminate the operation of this site at its own discretion.
Japanese Language-Version Terms of Use