Lieu-dit · Saint-Romain
En Grain
En Grain is a lieu-dit in Saint-Romain, Côte de Beaune, Burgundy, whose largest tier is regional.
11.1 ha
delimited
451 m
elevation
10.4 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 | Saint-Romain |
| Region | Côte de Beaune, Burgundy |
| Delimited | 11.1 hainao-aoc-viticoles-bulk (c. 4 September 2026) · cadastre-etalab (4 September 2026) |
| Planted | 1.51 hacadastre-etalab (4 September 2026) · ign-bdtopo-vigne (5 September 2026) · ign-rpg-2024 (5 September 2026) |
| Parcels | 83 |
| Grape variety | pinot noir, gamay, césar also permitted: aligoté, chardonnay, gamay de bouze, gamay de chaudenay, melon, pinot blanc, pinot grisinao-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 15 named plots ranked regional in Saint-Romain, from high to low:
Position
451 m
elevation
22.2%
very steep
ESE
east-southeast
upper
concave fold
| Elevation | 451 m 384 to 517 mign-rge-alti (5 September 2026) |
|---|---|
| Daytime temperature | −0.57 °C by day, relative to the village centre at 373 m, ± 0.13 °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 | 22.2% 12.5°ign-rge-alti (5 September 2026) |
| Aspect | east-southeast 123°ign-rge-alti (5 September 2026) |
| On the slope | 60% upper slope, in a concave hollow, 241 m drains onto itign-rge-alti (5 September 2026) |
Bedrock
- 57%Toarcian marl and clay 184–175 million years
- 8%Micaceous marl, lower Domerian about 186–185 million years
- 35%Carixian to Domerian marl 193–184 million years
Not a borehole: ordered by age, thickness by share of surface.
In the glass. Tends towards firm, somewhat rustic wine with plenty of substance and less aromatic lift. On its own this substrate says little, because it is almost always covered by weathered material and colluvium from higher up. (weak indication)
Grey to blue-grey marl and clay with thin sandy, micaceous layers, deposited in the Toarcian in a sea that temporarily became oxygen-poor. It is a soft sequence that offers little resistance and forms depressions and gently sloping lower slopes in the landscape. Sand and mica give the clay a little more structure locally, but the profile remains heavy.
For the vine. Retentive, cool soil with a considerable water reserve, slow in spring and prone to compaction. The sandy layers improve aeration here and there, but the whole remains a clay soil that calls for slope and drainage. Little active lime means low chlorosis pressure; waterlogging and excess vigour are the real drawbacks.
Forms the soft lower slopes and depressions on the western edge of the Mâconnais and the Côte chalonnaise, usually under a blanket of colluvium.
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: l4, l3a, l3b.
brgm-bdcharm50 (c. 4 September 2026)Sun and horizon
07:40
above the hill
18:04
behind the hill
10.4 h
sun at harvest
0.9 h
lost to the hill
Grey: sun up, behind the hill or its own slope.
Around harvest the sun rises here at 07:40 above the hill and disappears at 18:04 behind the hill: 10.4 hours of direct sun on a clear day. The ridge reaches 21.5° above the horizon to the west-northwest. The relief costs 0.6% of the irradiation from April to October, direct and diffuse together.
| Irradiation | +1.3% versus flat land 1,054 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 | 98.2% 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 | 06:16 | 19:24 | 13.1 h | 15.9 h |
| 20 September | 07:40 | 18:04 | 10.4 h | 12.3 h |
| 21 December | 08:47 | 15:36 | 6.8 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), 37% 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.
Air and cold
61 m
above the lowest point
drains far away
cold air
a main drain
64.9 ha flows past
| Cold air | 61 m high on the slope, cold air drains far awayign-rge-alti (5 September 2026) |
|---|---|
| Cold air passing through | 64.9 ha a main drain, mean over the polygon 0.41 haign-rge-alti (5 September 2026) |
Planting
SE-NW
down the slope
1.02 m
between the rows
82%
vineyard in 1950
| Rows | SE-NW (125°) down the slope (2°), every 1.02 m, all rows parallelmeasured over 1.5 of 1.5 ha plantedign-bdortho (5 September 2026) |
|---|---|
| Vineyard in 1950 | 82% abandoned since: 4.97 haassessed over 7.8 ha on the 1950-1965 aerial photographign-photos-historiques-1950-1965 (6 September 2026) |
Climate over time
station LA ROCHEPOT, 417 m, 6.7 km away
growing season, April to October: 1951-1980: 14.1 °C, 1991-2020: 15.2 °C
Huglin index: 1951-1980: 1,528, 1991-2020: 1,726
last spring frost: 1951-1980: day 115, 1991-2020: day 108
raw daily series, not corrected for station breaks
Who owns land here
0.87 ha of 11.1 ha delimited is registered to a legal entity
- GFA R THEVENIN MONTHELIE ET FILS6%
- SCI DE ST PLOTO2%
- COMMUNE DE SAINT ROMAIN<1%
- private individuals or unknown92%
- 0.68 ha GFA R THEVENIN MONTHELIE ET FILS GFA · land company
- 0.19 ha SCI DE ST PLOTO SCI · land company
- 0.01 ha COMMUNE DE SAINT ROMAIN COM · public
Private individuals or unknown: 10.3 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
- La Demignère Regional · 250 m
- Le Village Haut Village · 550 m
- Au Bief Regional · 550 m
- La Croix Neuve Village · 650 m
- L'Argillat Village · 650 m
- Sous la Velle Village · 750 m
- Le Dos d'Ane Village · 850 m
- Sous Labeau (1.er Canton) Regional · 900 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.