Lieu-dit · Segrois
En Riottes
En Riottes is a lieu-dit in Segrois, Côte de Nuits, Burgundy, whose largest tier is regional.
10.3 ha
delimited
323 m
elevation
10.1 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 | Segrois |
| Region | Côte de Nuits, Burgundy |
| Delimited | 10.3 hainao-aoc-viticoles-bulk (c. 4 September 2026) · cadastre-etalab (4 September 2026) |
| Planted | 6.63 hacadastre-etalab (4 September 2026) · ign-bdtopo-vigne (5 September 2026) · ign-rpg-2024 (5 September 2026) |
| Parcels | 18 |
| Grape variety | chardonnay, pinot noir, pinot blanc, pinot gris, aligoté, melon, sacy also permitted: gamayinao-cahiers-des-charges (7 September 2026) · dgddi-superficies-produits (7 September 2026) · franceagrimer-observatoire-viticulture (7 September 2026) |
| Organic | 2%agence-bio-cartobio (c. 5 September 2026) · agence-bio-operateurs (5 September 2026) |
Place in the village
Among all 10 named plots of Segrois, from high to low:
Position
323 m
elevation
12.3%
steep
W
west
mid-slope
even slope
| Elevation | 323 m 311 to 339 mign-rge-alti (5 September 2026) |
|---|---|
| Daytime temperature | +0.10 °C by day, relative to the village centre at 336 m, ± 0.02 °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 | 12.3% 7.0°ign-rge-alti (5 September 2026) |
| Aspect | west 281°ign-rge-alti (5 September 2026) |
| On the slope | 23% mid slope, on an even plane, 410 m drains onto itign-rge-alti (5 September 2026) |
Bedrock
- 100%Argovien marl and marly limestone 159.5–157.5 million years
In the glass. In practice it is mainly associated with white wine: broader and fuller than on hard limestone, and often described as slower to open up, although that depends at least as much on yield and vinification. The link runs through soil depth and water supply, not directly from rock to taste.
White marls and marly limestones from the Middle Oxfordian, referred to in the older French literature and on the geological map as faciès argovien. They were laid down on a quiet, relatively deep carbonate seabed where lime mud mixed with clay carried in from the land, roughly 159.5 to 157.5 million years ago. In the ground they are pale, crumbly layers that stick in rain and break up into flakes in drought, alternating with thin, harder limestone beds.
For the vine. Marl holds water, and that is the key property here: in a dry summer there is reserve in the subsoil and the roots can penetrate to considerable depth as long as the layer is not compacted. The downside is that the ground stays cold and heavy in spring and is hard to work after rain, so these marls almost always need slope and good drainage to perform as vineyard soil. The active lime content is high, so chlorosis is a real risk and the choice of rootstock matters.
Characteristic of the slopes around Chagny, Rully and Bouzeron, and of the upper slopes of the Corton hill where Corton-Charlemagne stands.
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: j5b.
brgm-bdcharm50 (c. 4 September 2026)Sun and horizon
09:01
above the hill
19:08
behind the hill
10.1 h
sun at harvest
1.5 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 09:01 above the hill and disappears at 19:08 behind the hill: 10.1 hours of direct sun on a clear day. The ridge reaches 15.8° above the horizon to the east-southeast. The relief costs 0.5% of the irradiation from April to October, direct and diffuse together.
| Irradiation | −1.7% versus flat land 1,011 kWh/m² from April to October, 45% 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 | 98.7% 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 | 07:16 | 21:19 | 14.1 h | 15.9 h |
| 20 September | 09:01 | 19:08 | 10.1 h | 12.3 h |
| 21 December | 10:02 | 16:23 | 6.3 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), 54% 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
28 m
above the lowest point
drains far away
cold air
a gully
8.7 ha flows past
| Cold air | 28 m high on the slope, cold air drains far awayign-rge-alti (5 September 2026) |
|---|---|
| Cold air passing through | 8.7 ha a gully, mean over the polygon 0.46 haign-rge-alti (5 September 2026) |
Planting
E-W
down the slope
1.37 m
between the rows
99%
vineyard in 1950
| Rows | E-W (87°) down the slope (14°), every 1.37 m, varies by plotmeasured over 6.6 of 6.6 ha plantedign-bdortho (5 September 2026) |
|---|---|
| Vineyard in 1950 | 99% abandoned since: 2.82 ha, rows then ran 83° differentlyassessed over 7.9 ha on the 1950-1965 aerial photographign-photos-historiques-1950-1965 (6 September 2026) |
Climate over time
station DIJON-LONGVIC, 219 m, 19.0 km away
growing season, April to October: 1951-1980: 14.7 °C, 1991-2020: 16.2 °C
Huglin index: 1951-1980: 1,677, 1991-2020: 1,881
last spring frost: 1951-1980: day 100, 1991-2020: day 100
series homogenised through 2022
Who owns land here
0.25 ha of 10.3 ha delimited is registered to a legal entity
- GFA DU CHENE2%
- private individuals or unknown98%
- 0.25 ha GFA DU CHENE GFA · land company
Private individuals or unknown: 10.0 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
- Les Petites Vignes Regional · 200 m
- Les Martennes Regional · 850 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.