Lieu-dit · Péronne
L'Isérable des Légères
L'Isérable des Légères is a lieu-dit in Péronne, Mâconnais, Burgundy, whose largest tier is regional.
1.63 ha
delimited
258 m
elevation
11.2 h
sun at harvest
Open on the mapWith the boundary, the plots, the sun through the year and the bedrock.
In figures
| Level | Regionalinao-aoc-viticoles-bulk (c. 4 September 2026) |
|---|---|
| Village | Péronne |
| Region | Mâconnais, Burgundy |
| Delimited | 1.63 hainao-aoc-viticoles-bulk (c. 4 September 2026) · cadastre-etalab (4 September 2026) |
| Planted | 0.91 hacadastre-etalab (4 September 2026) · ign-bdtopo-vigne (5 September 2026) · ign-rpg-2024 (5 September 2026) |
| Parcels | 2 |
| Grape variety | chardonnay also permitted: aligoté, pinot blanc, pinot gris, melon, sacyinao-cahiers-des-charges (7 September 2026) · dgddi-superficies-produits (7 September 2026) · franceagrimer-observatoire-viticulture (7 September 2026) |
| Organic | 64%agence-bio-cartobio (c. 5 September 2026) · agence-bio-operateurs (5 September 2026) |
Place in the village
Among the 52 named plots ranked regional in Péronne, from high to low:
Position
258 m
elevation
19.3%
steep
NE
northeast
mid-slope
convex ridge
| Elevation | 258 m 245 to 269 mign-rge-alti (5 September 2026) |
|---|---|
| Daytime temperature | +0.21 °C by day, relative to the village centre at 287 m, ± 0.03 °Cmeteo-france-quotidiennes (18 September 2026) · meteo-france-postes (6 September 2026) · meteo-france-lsh (6 September 2026) · ign-rge-alti (5 September 2026) |
| Slope | 19.3% 10.9°ign-rge-alti (5 September 2026) |
| Aspect | northeast 44°ign-rge-alti (5 September 2026) |
| On the slope | 20% mid slope, on a convex ridge, 200 m drains onto itign-rge-alti (5 September 2026) |
Bedrock
- 85%Aquitanian puddingstone and molasse about 23–20 million years
- 16%Clay-with-flints and sand of Blany circa 56 tot 28 (Eoceen tot Rupelien), niet nauwkeurig gedateerd
Not a borehole: ordered by age, thickness by share of surface.
In the glass. On the stony parts usually ripe, round Chardonnay with an early harvest; on the marly parts more volume and less tension. Read this as a tendency within the Mâconnais, not as a fixed rule. (weak indication)
Conglomerate of rounded limestone pebbles in a sandy-marly matrix, alternating with softer molasse of sand and marl. Deposited in the Aquitanian, at the start of the Miocene, when rivers from the Mâconnais slopes carried debris down to the subsiding Bresse graben. In the Mâconnais the package forms the lower ridges and the transition to the plain.
For the vine. Where the pebbles dominate the soil is stony, free-draining and quick to warm, with limited fertility; where the molasse is marly it holds more water and becomes heavier. The profile changes over short distances and the map does not make that distinction at this scale.
Mâconnais: Prissé, Davayé, Verzé, Fuissé, Solutré-Pouilly, Azé, Burgy, Clessé, Chevagny-lès-Chevrières, Charnay-lès-Mâcon; also around Buxy and Culles-les-Roches.
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: m1, e4-g1.
brgm-bdcharm50 (4 September 2026)Sun and horizon
07:43
above the hill
18:52
behind the crest of the slope
11.2 h
sun at harvest
Grey: sun up, behind the hill or its own slope.
Around harvest the sun rises here at 07:43 above the hill and disappears at 18:52 behind the crest of the slope: 11.2 hours of direct sun on a clear day. The ridge reaches 7.3° above the horizon to the southwest.
| Irradiation | −5.6% versus flat land 1,008 kWh/m² from April to October, 43% 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 | 99.3% 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, the caveat
| rise | set | sun | day | |
|---|---|---|---|---|
| 21 June | 06:14 | 21:05 | 14.8 h | 15.8 h |
| 20 September | 07:43 | 18:52 | 11.2 h | 12.3 h |
| 21 December | 08:32 | 15:27 | 6.9 h | 8.6 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), 38% of the far field is forest (BD Forêt), no buildings.
Air and cold
17 m
above the lowest point
drains away
cold air
little inflow
1.8 ha flows past
| Cold air | 17 m above the hollow, cold air drains awayign-rge-alti (5 September 2026) |
|---|---|
| Cold air passing through | 1.8 ha little inflow, mean over the polygon 0.12 haign-rge-alti (5 September 2026) |
Planting
ESE-WNW
across the slope
1.35 m
between the rows
| Rows | ESE-WNW (107°) across the slope (64°), every 1.35 m, varies by plotmeasured over 0.9 of 0.9 ha plantedign-bdortho (6 September 2026) |
|---|
Climate over time
station MACON, 219 m, 16.3 km away
growing season, April to October: 1951-1980: 15.4 °C, 1991-2020: 17.1 °C
Huglin index: 1951-1980: 1,718, 1991-2020: 2,022
last spring frost: 1951-1980: day 96, 1991-2020: day 85
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
- Les Legres Regional · 250 m
- Lanque Regional · 300 m
- La Condamine de Lanque Regional · 350 m
- Le Bouchot Regional · 350 m
- Creux de Merzé Regional · 450 m
- Les Colonges Regional · 600 m
- Lolion Regional · 650 m
- Gravetin Regional · 750 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.