Lieu-dit · Saint-Vallerin
Lès Betaux
Lès Betaux is a lieu-dit in Saint-Vallerin, Côte Chalonnaise, Burgundy, whose largest tier is village.
4.30 ha
delimited
333 m
elevation
10.8 h
sun at harvest
Open on the mapWith the boundary, the plots, the sun through the year and the bedrock.
In figures
| Level | Village 95% Regional 5%inao-aoc-viticoles-bulk (c. 4 September 2026) |
|---|---|
| Village | Saint-Vallerin |
| Region | Côte Chalonnaise, Burgundy |
| Delimited | 4.30 hainao-aoc-viticoles-bulk (c. 4 September 2026) · cadastre-etalab (4 September 2026) |
| Planted | 2.87 hacadastre-etalab (4 September 2026) · ign-bdtopo-vigne (5 September 2026) · ign-rpg-2024 (5 September 2026) |
| Parcels | 23 |
| Grape variety | chardonnayinao-cahiers-des-charges (7 September 2026) · dgddi-superficies-produits (7 September 2026) · franceagrimer-observatoire-viticulture (7 September 2026) |
| Organic | 0%agence-bio-cartobio (c. 5 September 2026) · agence-bio-operateurs (5 September 2026) |
Place in the village
Among the 18 named plots ranked village in Saint-Vallerin, from high to low:
Position
333 m
elevation
17.0%
steep
ESE
east-southeast
upper
concave fold
| Elevation | 333 m 311 to 359 mign-rge-alti (5 September 2026) |
|---|---|
| Daytime temperature | −0.24 °C by day, relative to the village centre at 304 m, ± 0.04 °Cmeteo-france-quotidiennes (6 September 2026) · meteo-france-postes (6 September 2026) · meteo-france-lsh (6 September 2026) · ign-rge-alti (5 September 2026) |
| Slope | 17.0% 9.6°ign-rge-alti (5 September 2026) |
| Aspect | east-southeast 106°ign-rge-alti (5 September 2026) |
| On the slope | 53% upper slope, in a concave hollow, 260 m drains onto itign-rge-alti (5 September 2026) |
Bedrock
- 40%Toarcian marl and clay 184–175 million years
- 60%Domerian marl and sandy limestone about 186–184 million years
Not a borehole: ordered by age, thickness by share of surface.
In the glass. Tends towards rounder, riper wines with more volume than pronounced tension, in whites often broad in texture. Much depends on the ratio of marl to stone in the plot, more than on the formation as a whole. (weak indication)
Deposits of a shallow, turbid Jurassic sea, roughly 186 to 184 million years ago. The package alternates between grey-blue marl and harder beds of clayey to sandy limestone, so that the soil can differ greatly from plot to plot. In the ground you see crumbly, plastic marl with slabs of stone in between that stabilise the slope.
For the vine. Marl retains water, which in a dry summer is an insurance and in a wet spring a handicap: the ground stays cold and is slow to get going. The harder sandy limestone beds improve drainage and make the subsoil more accessible to roots. Without a slope such a soil quickly becomes too wet; with a slope it retains water without becoming saturated, which makes the water supply over the season more even than on the thin limestone soils, at a moderate to high active lime content.
Outcrops in strips at the foot of the limestone slopes, among other places in the Mâconnais and along the Côte Chalonnaise.
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: l3b-c, l4.
brgm-bdcharm50 (4 September 2026)Sun and horizon
07:28
above the hill
18:16
behind the hill
10.8 h
sun at harvest
0.6 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 07:28 above the hill and disappears at 18:16 behind the hill: 10.8 hours of direct sun on a clear day. The ridge reaches 16.6° above the horizon to the west.
| Irradiation | +0.2% versus flat land 1,056 kWh/m² from April to October, 42% 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 sky | 99.4% 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
| rise | set | sun | day | |
|---|---|---|---|---|
| 21 June | 05:55 | 19:49 | 13.9 h | 15.9 h |
| 20 September | 07:28 | 18:16 | 10.8 h | 12.3 h |
| 21 December | 08:25 | 15:52 | 7.5 h | 8.5 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.
Air and cold
36 m
above the lowest point
drains far away
cold air
little inflow
1.0 ha flows past
| Cold air | 36 m high on the slope, cold air drains far awayign-rge-alti (5 September 2026) |
|---|---|
| Cold air passing through | 1.0 ha little inflow, mean over the polygon 0.17 haign-rge-alti (5 September 2026) |
Planting
ESE-WNW
down the slope
1.04 m
between the rows
97%
vineyard in 1950
| Rows | ESE-WNW (108°) down the slope (3°), every 1.04 m, varies by plotmeasured over 2.8 of 2.9 ha plantedign-bdortho (5 September 2026) |
|---|---|
| Vineyard in 1950 | 97% abandoned since: 0.78 haassessed over 3.5 ha on the 1950-1965 aerial photographign-photos-historiques-1950-1965 (6 September 2026) |
Climate over time
station MT-ST-VINCENT, 601 m, 16.3 km away
growing season, April to October: 1951-1980: 13.5 °C, 1991-2020: 15.1 °C
Huglin index: 1951-1980: 1,248, 1991-2020: 1,553
last spring frost: 1951-1980: day 107, 1991-2020: day 101
series homogenised through 2022
Who owns land here
No parcel here is registered to a legal entity. In France only those owners are public; parcels of private individuals are not.
Nearby lieux-dits
- Lès Brus Village · 150 m
- Lès Chaintres Regional · 200 m
- Collonge Regional · 200 m
- Le May Morin Village · 200 m
- Lès Mays Regional · 250 m
- Lès Cloux Village · 300 m
- Lès Crays Regional · 300 m
- Lès Prés Village · 300 m
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.