All four survey disciplines under a single contract and a unified set of reports for expert review.
A brief introduction to building surveys and a guide to the right service.
Describe your site and objective — we will advise which documents you need.
All four survey disciplines under a single contract and a unified set of reports for expert review.
A brief introduction to building surveys and a guide to the right service.
Describe your site and objective — we will advise which documents you need.
We study the climatic conditions of the site and the hydrological regime of water bodies. We determine climatic parameters for calculating snow and wind loads, glaze ice characteristics, and design water discharges and levels. This data is used when designing structures and flood protection measures.
Not a single negative expert review conclusion in 13 years
Hydrometeorological surveys — is the study of climate and water bodies in the construction area. A hydrologist collects long-term records from weather stations and gauges, surveys rivers and brooks, and calculates the parameters required for design: snow and wind loads, ice accretion, frost penetration, water discharges and water levels.
The climatic section is required for almost any capital construction project: it is used to design the roof, structural frame and heating system. The hydrological section is needed if there is a river, stream or pond nearby, when building bridges, dams, utility crossings beneath a channel, and in areas prone to flooding.
Interesting factHydrometeorology
This term describes a flood level with about a 1% chance of being reached or exceeded in any year. It does not promise a century-long gap. With constant annual probability and independent events, the chance of at least one such flood in 30 years is about 26%.
Source: USGS
Fresh, fluffy snow and dense, settled snow of the same depth contain different amounts of water. Surveys therefore measure both depth and snow water equivalent: the water released when the snow melts.
Source: NOAA / National Weather Service
Roofs, roads and parking areas reduce infiltration and send more water rapidly into drains and rivers. The same rainfall can place very different demands on drainage before and after development.
Source: USGS
Accumulating ice can block a river channel and raise water levels upstream. When the jam breaks, flooding can threaten downstream areas. Flood assessment therefore considers both river flow and ice conditions.
Source: NOAA / National Weather Service
Depends on whether there is a river, stream or water body nearby.
from 110,000 ₽
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See a real example — surveys for of the dam on the Meleyevsky Stream at the confluence with the Setun: climate, morphological cross-sections, calculation of water discharges and levels allowing for river backwater.
We select the nearest weather stations and hydrological gauges with long observation records and verify whether their data are representative of the site. For the dam in Busharino, climate data were taken from the Novo-Iyerusalim, Naro-Fominsk and Mozhaysk stations, and runoff was derived from analogue gauged rivers.
Stage outcome: it is clear what data the calculations are based on.
The hydrologist walks the channel and floodplain, looking for high-water marks on trees and banks, and assessing channel roughness, scour and debris jams. At Busharino, they found an old earth dam and signs of beaver activity — both of which affect water levels at the future dam site.
Stage outcome: description of the channel, floodplain and high-water marks.
| Watercourse survey | 1 km |
| Catchment survey | 1 km |
| Hydromorphological survey | 1 km |
| Channel cross-section survey | 0.15 km |
| Calculation cross-sections | brook and river |
We survey cross-sections across the channel and floodplain using a total station and staff. From these, we plot the stage–discharge rating curve showing the water level for a given flow rate.
Stage outcome: channel and floodplain cross-sections at design stations.
Using weather station records, we calculate everything the designer needs for load and building services calculations: temperatures, precipitation, wind, snow, glaze ice, frost penetration depth and hazardous phenomena.
For most projects without nearby rivers, this forms the main scope of hydrometeorological surveys.
Stage outcome: climatic parameters for structural and building services design.
| Climatic region | IIV |
| Coldest five-day period | −28 °C |
| Snow region | III — 1.5 kPa |
| Wind region | I — 0.23 kPa |
| Glaze ice district | II |
| Prevailing winds | southern |
We calculate peak discharges for spring snowmelt and rain floods, minimum low-flow discharges and water levels for rare exceedance probabilities — 1, 2, 5 and 10%. We account for backwater from the main river, ice regime and channel deformations.
These figures determine the dam crest elevation, the soffit level of the bridge superstructure, the burial depth of the pipe beneath the riverbed, and flood protection for the site.
Stage outcome: design discharges and water levels for the project.
| Exceedance probability | Level |
|---|---|
| 1 % | 143,90 |
| 2 % | 143,82 |
| 3 % | 143,80 |
| 5 % | 143,75 |
| 10 % | 143,60 |
Ignoring backwater, the 1% AEP level would be 80 cm lower — 143.10 m.
Browse our report for the dam on the Meleyevsky Stream at its confluence with the River Setun. It includes:
Survey deliverables: technical report in electronic format for design and expert review.
91 sheets of this report. Client details, signatures and stamps have been redacted.
We respond to the expert reviewer's comments and refine calculations if necessary.
Contract prices for hydrometeorological surveys on completed projects. Projects with photos feature a detailed breakdown of the work on a dedicated page.
Odintsovo District, Busharino Estate
channel cross-sections, 1% exceedance discharges and water levels, ice regime, climate
More about the project →
Ramensky District, Khripan
climate, glaze ice, thunderstorms and hail
More about the project →
Noginsk, 5 Soedinitelnaya Street
climatic summary
More about the project →
Kartmazovo, Moscow
climatic summary
More about the project →
Moscow, Vernadskogo Prospekt
climatic summary
More about the project →
Podolsk, 31 Pravdy Street
climatic summary
More about the project →
Moskovsky, Solnechnaya Street area
climate, 1% exceedance daily maximum precipitation
More about the project →
Khakassia, 1.5 km west of Zarechnaya
climatic summary
More about the project →
Pavlovsky Posad District, M-12
three ditch crossings: 1% AEP discharges and water levels, climate
More about the project →
Sokolniki Park, Moscow
climatic summary
More about the project →
Moscow, Kolomenskoye, Kashirskoye Highway
climatic summary
More about the project →
Beshpeltir, Tsentralnaya Street
climatic summary
More about the project →
Bugrino, Kolguyev Island
climate data from Kolguyev Severny weather station
More about the project →
Moscow, 21 Narvskaya Street, Building 11
climatic summary
More about the project →
Moscow, 2nd Yuzhnoportovy Proyezd, 26A
climatic summary
More about the project →These are just some of our projects — we carry out work on 40–50 sites every year.
We will provide an exact price on the day of your enquiry — based on the technical brief and site location plan.
To get a quote, please send:
For capital construction projects whose design is submitted for expert review — covering the climate summary: temperatures, precipitation, wind, snow and glaze ice. Hydrological calculations are added if water bodies are nearby or the site may be subject to flooding.
This is the water level that is reached or exceeded on average once every 100 years. For critical structures, the designer sets elevations above this level with a safety margin.
In accordance with SP 47.13330 "Engineering surveys for construction", SP 482.1325800 "Hydrometeorological surveys for construction" and SP 529.1325800 "Determination of main design hydrological characteristics"; climate and load zoning follow SP 131.13330 and SP 20.13330.
For some parameters, yes, but expert review requires a site area characterisation based on data from the nearest weather stations, including hazardous weather phenomena. We compile this in the report specifically referenced to your site.
For a climate summary, a site visit is usually not required, or a single day of reconnaissance is sufficient. Watercourse inspection and cross-section surveying take 1–2 days per site.
Under SP 47.13330.2016 (Cl. 7.1.8), the validity period of survey data is measured from the completion of surveys to the start of design: no more than 2 years for the hydrological regime of water bodies, and 5 years for the meteorological regime of the area. Older data may be used without additional surveys if a reconnaissance inspection reveals no changes in the water body regime, climate or man-made load. Data from state network gauges and stations do not expire; they are supplemented with records from the last 2 years for hydrology and 5 years for meteorology.
If you do not have a technical brief, describe the project: site location, planned construction, and whether a design exists. We will reply with a scope of work and cost.
