After a major flood in Orsk, they decided to resort to digital technologies to protect against the threat in the future

After a large-scale flood in the city of Orsk, Orenburg region, which occurred in April, the city decided to resort to digital modeling to protect against flooding. As TAdviser discovered, on June 21, 2024, the Orsk City Administration announced a tender with an initial price of about 110 million rubles for the development of a feasibility study for measures to protect the city from flooding^[1].

source = Government of the Orenburg region

It follows from the published technical assignment that various engineering surveys will be carried out in Orsk first, and the next stage will be the creation of a digital model of the terrain of the region's land and scenario calculations of hydrological parameters on sections of several rivers.

In particular, it is required to create a digital relief model with a resolution of 5 m and an area of ​ ​ 400 km2 per territory undergoing flooding, including not only the city of Orsk, but also Novotroitsk, to determine a set of scenarios that implement various hydrographs of water supply during floods and floods.

To define boundary modeling conditions, it is necessary to collect topographic, bathygraphic and hydrometeorological initial data taking into account the requirements of the software package.

Based on the results of engineering surveys and the construction of a digital model, it is planned to develop possible options for protecting Orsk from flooding - at least two options.

The work must be completed by March 10, 2025 from the date of conclusion of the contract with the supplier.

The total area of Orsk within the city limits is 621.33 km ² and the population is 189,195.

In early April, we recall that due to flooding in the Orenburg region, according to the regional authorities, more than 12 thousand residential buildings were flooded, more than 7.7 thousand people were evacuated. Orsk suffered the most, where there was a breakthrough of the dam on the Ural River. The incident was attributed to a federal emergency^[2].

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