The monitoring network on this water

Hydrionis holds 1,639 values from 3 gauges on this water. Discharge is a property of a gauge and its reach, not of this water as a whole, so this page reports the network and its records rather than a single figure.

3
Gauges
1,639
Values held
1964–2026
Record spans
517 km²
Catchment above the deepest gauge

Every gauge Hydrionis holds here

Gauges on the La Varenne and what each holds
GaugeMeasuresValuesRecord
La Varenne à Martignymean monthly river flow6761964–2021
La Varenne à Domfrontmean monthly river flow5481980–2026
La Varenne à Saint-Fraimbault [Moulin Crinais]mean monthly river flow4151992–2026

How these gauges were attached to this water

Named by the publisher Each gauge here names this water in the publisher’s own station record. Hydrionis has not inferred the connection from station names.

What each gauge’s link to this water rests on
GaugeEvidenceEstablished
La Varenne à MartignyStated by the publisher — Hub'Eau hydrometry site reference, libelle_cours_eau, code_cours_eau and surface_bv fields — https://hubeau.eaufrance.fr/api/v2/hydrometrie/referentiel/sites2026-08-26
La Varenne à DomfrontStated by the publisher — Hub'Eau hydrometry site reference, libelle_cours_eau, code_cours_eau and surface_bv fields — https://hubeau.eaufrance.fr/api/v2/hydrometrie/referentiel/sites2026-08-26
La Varenne à Saint-Fraimbault [Moulin Crinais]Stated by the publisher — Hub'Eau hydrometry site reference, libelle_cours_eau, code_cours_eau and surface_bv fields — https://hubeau.eaufrance.fr/api/v2/hydrometrie/referentiel/sites2026-08-26

What this record holds

Hydrionis decides which waters get a page, and which of those are offered to search, from what is actually held rather than from how the page reads. Five signals are counted; this record has 3 of them, which makes it a full profile.

Information-gain signals held for this water body
SignalHeldCounts
Gauges holding a real record3yes, 3 or more
Years spanned63yes, 20 or more
Values held1,639yes, 1000 or more
Distinct measurements1no
Publishers measuring it1no
Official identifiers2recorded, not counted

Where these figures come from

MeasuredHigh confidenceAugust 2021

Source: Hub'EauHydrométrie — French river flow and stage, G2100612 (G210061201). Licence: Open — attribution required (attribution required).

Method: Monthly mean discharge (QmM) computed by the publisher from its validated sub-hourly record, reported in litres per second and converted to cubic metres per second on ingestion. Where a site has been measured by more than one station, the station with the longest published series is used rather than blending stations whose values for the same month can differ.

Measured on La Varenne.

Retrieved 25 August 2026.