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Lieu-dit · Fleys

Le Plart

Le Plart is a lieu-dit in Fleys, Chablis en Grand Auxerrois, Burgundy, whose largest tier is village.

18.5 ha

delimited

204 m

elevation

10.2 h

sun at harvest

Open on the mapWith the boundary, the plots, the sun through the year and the bedrock.

In figures

LevelVillageinao-aoc-viticoles-bulk (c. 4 September 2026)
VillageFleys
RegionChablis en Grand Auxerrois, Burgundy
Delimited18.5 hainao-aoc-viticoles-bulk (c. 4 September 2026) · cadastre-etalab (4 September 2026)
Planted16.0 hacadastre-etalab (4 September 2026) · ign-bdtopo-vigne (5 September 2026) · ign-rpg-2024 (5 September 2026)
Parcels34
Grape varietychardonnayinao-cahiers-des-charges (7 September 2026) · dgddi-superficies-produits (7 September 2026) · franceagrimer-observatoire-viticulture (7 September 2026)
Organic11%agence-bio-cartobio (c. 5 September 2026) · agence-bio-operateurs (5 September 2026)

Place in the village

Among the 35 named plots ranked village in Fleys, from high to low:

sun at harvest 32
elevation 20
slope 13
on the slope 22

Position

204 m

elevation

17.4%

steep

WNW

west-northwest

mid-slope

even slope

Elevation204 m 176 to 230 mign-rge-alti (5 September 2026)
Daytime temperature+0.06 °C by day, relative to the village centre at 216 m, ± 0.01 °Cmeteo-france-quotidiennes (6 September 2026) · meteo-france-postes (6 September 2026) · meteo-france-lsh (6 September 2026) · ign-rge-alti (5 September 2026)
Slope17.4% 9.9°ign-rge-alti (5 September 2026)
Aspectwest-northwest 302°ign-rge-alti (5 September 2026)
On the slope35% mid slope, on an even plane, 318 m drains onto itign-rge-alti (5 September 2026)

Bedrock

  • 100%Kimmeridgian limestone and marl 152–⁠149 million years

In the glass. Tends towards linear, slightly saline white wine with firm acidity. In Chablis that picture cannot be separated from climate, aspect and élevage, so read it as a tendency and not as a rule.

A rhythmic alternation of grey-blue marl and hard limestone beds, deposited in a shallow, warm sea during the middle and upper Kimmeridgian. The ratio of limestone beds to marl differs from bed to bed and from sector to sector; in the Chablisien the sequence is several tens of metres to well over a hundred metres thick. The decree of 1938 set the Chablis boundary at the Kimmeridgian, recognisable by the small comma-shaped oyster Nanogyra virgula, but that criterion proved untenable: Petit Chablis was added in 1943 and the area was enlarged in 1956.

For the vine. The marl retains water and the limestone beds let surplus water through, which makes the substrate relatively balanced in wet and dry years alike. Where the marl is not compacted, rooting can go reasonably deep; how the vine responds in summer, however, depends more on soil depth and water regime than on the rock itself. The active lime content is high, so chlorosis remains a real risk and the choice of rootstock matters.

Characteristic of Chablis, from the grands crus on the right bank of the Serein to the premiers crus, and of the Tonnerrois and parts of the Auxerrois.

BRGM geological map at 1:50,000. It tells vineyards apart, not plots within a vineyard. The link between rock and taste is indirect: soil depth, water and warmth do the work, and slope, vine age and the cellar do the rest. Units on that map: j8.

brgm-bdcharm50 (4 September 2026)

Sun and horizon

09:05

above the hill

19:15

behind the hill

10.2 h

sun at harvest

1.2 h

lost to the hill

Grey: sun up, but behind the hill or the vineyard's own slope.

Around harvest the sun rises here at 09:05 above the hill and disappears at 19:15 behind the hill: 10.2 hours of direct sun on a clear day. The ridge reaches 16.3° above the horizon to the southeast. The relief costs 0.6% of the irradiation from April to October, direct and diffuse together.

Irradiation−4.3% versus flat land 967 kWh/m² from April to October, 47% of it diffuseunder the average cloudiness of 2005 to 2023 (PVGIS-SARAH3, EU JRC); direct, diffuse and reflected light togetherign-rge-alti (5 September 2026) · ign-lidarhd-mnh (6 September 2026) · ign-bdforet-v2 (5 September 2026) · jrc-pvgis-sarah3 (10 September 2026)
Open sky98.3% of the sky the slope itself sees; the surrounding relief blocks the restign-rge-alti (5 September 2026) · ign-lidarhd-mnh (6 September 2026) · ign-bdforet-v2 (5 September 2026)
Three reference days and the caveat
risesetsunday
21 June06:5420:5714.1 h16.0 h
20 September09:0519:1510.2 h12.3 h
21 December10:4716:496.0 h8.4 h

Computed from the IGN elevation model at 5 m: horizon in 36 directions up to six kilometres, sun position per minute, angle of incidence on the mean slope. Clear sky, with the tree canopy from the IGN forest inventory as a raised horizon (15 m closed forest, 5 m heath, trees within 60 m ignored), 29% of the far field is forest (BD Forêt), no buildings.

The irradiation loss does include clouds: the average of 2005 to 2023 (PVGIS-SARAH3, EU JRC), not any particular year.

ign-rge-alti (5 September 2026) · ign-lidarhd-mnh (6 September 2026) · ign-bdforet-v2 (5 September 2026)

Air and cold

28 m

above the lowest point

drains far away

cold air

a main drain

135.3 ha flows past

Cold air28 m high on the slope, cold air drains far awayign-rge-alti (5 September 2026)
Cold air passing through135.3 ha a main drain, mean over the polygon 0.91 haign-rge-alti (5 September 2026)

Planting

ESE-WNW

down the slope

1.05 m

between the rows

94%

vineyard in 1950

RowsESE-WNW (116°) down the slope (6°), every 1.05 m, varies by plotmeasured over 16.0 of 16.0 ha plantedign-bdortho (5 September 2026)
Vineyard in 195094% abandoned since: 1.02 ha, planted since: 1.04 haassessed over 16.9 ha on the 1950-1965 aerial photographign-photos-historiques-1950-1965 (6 September 2026)

Climate over time

19802000202014°16°18°

station CHABLIS_SAPC, 141 m, 4.9 km away

raw daily series, not corrected for station breaks

Who owns land here

6.64 ha of 18.5 ha delimited is registered to a legal entity

  • LA JONCHERE10%
  • SA MAISON JOSEPH DROUHIN7%
  • SCEV DOMAINE GAUTHERON ALAIN ET CYRIL5%
  • SAINT JEAN4%
  • GROUPEMENT FONCIER AGRICOLE LES GRUMES DE MONS4%
  • 2 other legal entities6%
  • private individuals or unknown64%

Private individuals or unknown: 11.8 ha.

Share of the delimited hectares. Only legal entities are public in France; everything else stays unnamed. From the public register of legal entities (DGFiP), as of 1 January 2025. The owner is not always the one who works the vineyard: tenancy is common.

Nearby lieux-dits

In the same village, measured between label points. That does not say which ones border each other; the map shows that.

Where each figure comes from

Classification
The INAO delimitation per denomination, cut against the cadastral parcel. Only the INAO's own plans are legally binding; this map is informational.
Area
Computed on the sphere from longitude and latitude (turf.area), not in Lambert-93. For an appellation this is the union of the INAO polygons across commune boundaries, measured on the unclosed geometry; the fifteen metres used to close the outline for the map are not counted. For a climat it is the union of the cadastral lieu-dit polygons with that name.
Planted
Parcel area times vineyard cover, where cover comes from the IGN vegetation layer supplemented by the agricultural declaration. Checked against the customs harvest declarations: median deviation 5.1 per cent over a hundred appellations.
Elevation
Mean of the elevation-model cells whose centre falls inside the polygon, on a 5 m grid.
Slope
Per-cell slope from the elevation model using Horn's method, then averaged over the cells in the polygon.
Aspect
Vector mean of the per-cell aspect. A plain average would turn north-east and north-west into south.
Sun at harvest
Hours of direct sun on 20 September under a clear sky, with the horizon in 36 directions out to six kilometres and the height of woods and buildings on top of it. Canopy height is measured where LiDAR HD covers the area and estimated from BD Forêt where it does not; the panel states which of the two was used.
Grape variety by appellation
Per appellation and colour the permitted varieties from the approved cahier des charges; per appellation and tier the declared hectares of white and red from the customs harvest declaration (product codes). One colour permitted: the main variety of that colour. Two colours: from 85 percent of the hectares that colour applies, in between it is called mixed. Champagne: the dominant variety from the planted hectares per variety per commune from FranceAgriMer. Per polygon the dominant variety of its parts by area. Derived, not measured: the variety per plot exists only in the customs vineyard register, which is not public. In a two-colour appellation a single plot may carry the other variety. Customs withhold small appellations (statistical secrecy), in which case the split is missing.
Bedrock
The geological unit covering the largest share of the polygon, from the 1:50,000 geological map. At 1:50,000 the map separates one climat from another, but not what varies inside a climat.
Organic
Share of the area certified organic or in conversion, from the CartoBio plot register.