Over 25 years of experience in hydrotechnics

Professional Staff Gauges & Water Level Monitoring Solutions

We design, manufacture and install stainless steel, aluminium and PVC staff gauges, roof snow depth gauges, and maintenance-free automated water level monitoring systems (LoRaWAN / NB-IoT). Our instruments combine extreme durability, precision, and compliance with international hydrological standards.

AISI 304 Stainless Steel Acid-resistant construction with replaceable background plates
EVRF2007 / EVRS (NAP) Graduations and zero-datum plates compliant with European EVRF2007 (Amsterdam) & national datums
Poland & Europe Hundreds of installations on rivers, weirs, dams, and reservoirs
Stainless steel staff gauge – OGNIWO s.c.
Stainless steel staff gauges (AISI 304 / 1.4301) – manufacturing and installation
What we do

Comprehensive Range of Measuring Instruments

We supply water level gauges and telemetry systems tailored to every hydrotechnical structure. Swipe through photos directly on the product cards or click to enlarge.

Custom Design of Water Gauging Stations

A properly engineered water gauging station provides reliable hydrological data essential for water stage monitoring, flood forecasting, and reservoir management. We assist in site selection, custom configuration of sloped (inclined) or stepped gauges, and datum elevation plates (e.g. EVRF2007 / Amsterdam).

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Our Clients & Selected Installations

Our staff gauges serve key water management authorities, hydropower plants, industrial facilities, and municipalities across Poland and Europe.

Państwowe Gospodarstwo Wodne Wody Polskie IMGW-PIB Generalna Dyrekcja Dróg Krajowych i Autostrad KGHM Polska Miedź Zespół Elektrowni Wodnych Niedzica
Staff gauges for the German market (LAWA / WSV standard – Berlin, Weilheim) 3 photos

Staff gauges for the German market (LAWA / WSV standard – Berlin, Weilheim)

Acid-resistant stainless steel staff gauges (1.4301 / AISI 304) manufactured in compliance with German LAWA (Pegelvorschrift) and WSV guidelines for clients in Germany (including Berlin and Weilheim). High-contrast yellow background, E-pattern graduation in decimetres/centimetres, and colour-coded segments for low water (green) and warning/alarm stages (red).

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Knowledge Base

Frequently Asked Questions (FAQ)

Key hydrological concepts and answers to common questions regarding staff gauges and vertical reference systems.

What is a staff gauge (water level gauge)?
A staff gauge is a hydrological measuring instrument in the form of a vertical, stepped, or inclined (sloped) graduated scale made of durable materials (such as acid-resistant stainless steel, aluminium, or PVC), installed at a gauging station for direct visual reading of the water stage.
Are water stage and water surface elevation the same thing?
Water stage (H) is a relative value (in centimetres) read directly from the staff gauge above the local gauge datum zero — convenient for daily operational use.
Water level (water surface elevation) is an absolute value in metres above sea level referenced to a national vertical datum (e.g. EVRF2007), equal to the sum of the gauge zero elevation and the observed water stage.
What is the Normal Operating Level (NOL / NPP)?
It is the highest permissible water surface elevation in a reservoir or at a damming structure maintained under normal operating conditions.
Which vertical reference systems and standards are supported on your staff gauges?
We manufacture custom staff gauges and zero-datum plates compliant with the European Vertical Reference System (EVRS / EVRF2007 – Normaal Amsterdams Peil) as well as national realisations across Europe — including DHHN2016 (m ü. NHN) and LAWA / WSV guidelines in Germany, PL-EVRF2007-NH (npm Am) in Poland, and Bpv (Baltic / Kronstadt).