# Terrain aspect statistics — 10 Hokkaido resorts (DEM grid, 5–45° slopes)

This page counts digital elevation model (DEM) grid cells with slopes between 5° and 45°, within each resort’s baked 3D extent, grouped into eight compass aspects. It is not skiable area, not area inside a resort boundary, and no piste mask is applied.

> This page presents static terrain statistics and model parameters. Snow-quality scores are SnowWind model estimates — not measurements, not an official forecast, and not an avalanche or safety assessment.

Data version: 35cc0286ff14@2026-09-17T06:02:38.627Z

## Sapporo Teine

| Aspect | Share of cells | Mean slope | Share ≥25° | Example runs |
|---|---|---|---|---|
| N | 16.7% | 22.1° | 41% | 北かべ / North Face · 聖火台 オーシャンストリーム / Seikadai Ocean Stream · 聖火台 オーシャンダイブ / Seikadai Ocean Daive · パラダイス / Paradise |
| NE | 17.8% | 22.6° | 43% | ナチュラル / Natural · （札幌オリンピック）女子大回転 / Sapporo Olympic Course） Women’s Giants Slalom · レインボー / Rainbow · 白樺サントラップ / Shirakaba Sun Trap |
| E | 16.1% | 20.9° | 35% | シティビューパノラマ / City View Panarama |
| SE | 11.6% | 21.6° | 39% | シティビュークルーズ / City View Cruise · 白樺サンダンス / Shirakaba Sun Dance |
| S | 9.2% | 25.3° | 56% | — |
| SW | 9.9% | 26.7° | 61% | — |
| W | 8% | 23.8° | 48% | — |
| NW | 10.7% | 22.8° | 44% | — |

- Highest point (DEM): 1023 m · Lowest point (DEM): 163 m · Vertical drop: 860 m
- Dominant aspects: NE · N
- Lift wind exposure (MODEL PARAMETER): Medium

## Rusutsu

| Aspect | Share of cells | Mean slope | Share ≥25° | Example runs |
|---|---|---|---|---|
| N | 13.7% | 16.1° | 17% | イゾラグランドコース / Isola Grand · イーストヴィヴァルディ / East Vivaldi · イーストティーニュコース / East Tignes · フーボルコーズ / Fuboru |
| NE | 10.6% | 16.4° | 15% | フリコ沢コース / Furikozawa · レインボーコース / Rainbow · スティームボートB / Steamboat-B · スティームボートA / Steamboat-A |
| E | 10.2% | 17.7° | 20% | ヘブンリー・ビュー・コース / Heavenly View · ジャイアントコース / Giant · バンビコース / Bambi · エバーコース / Eva |
| SE | 11.4% | 16.6° | 20% | ホワイトラバーコース / White Lover · ヘブンリートレイル / Heavenly Trail · ファミリーコース / Family · エリートコース / Elite |
| S | 10% | 16.2° | 20% | — |
| SW | 12.8% | 15.6° | 15% | — |
| W | 15.1% | 14.8° | 12% | イゾラD迂回コース / Isola-D Bypass |
| NW | 16.2% | 15.8° | 15% | イゾラDコース / Isola-D · イゾラCコース / Isola-C |

- Highest point (DEM): 992 m · Lowest point (DEM): 307 m · Vertical drop: 685 m
- Dominant aspects: NW · W
- Lift wind exposure (MODEL PARAMETER): Medium

## Niseko United

| Aspect | Share of cells | Mean slope | Share ≥25° | Example runs |
|---|---|---|---|---|
| N | 9.3% | 18.5° | 27% | パラレルコース / Parallel · レジェンド・オブ・シンヤ / Legend of Shinya · 初級者迂回路 / Beginners access · 接続 / Setsuzoku |
| NE | 14.3% | 19.4° | 30% | シルバードリーム / Silver Dream · 羊蹄サンセット / Youtei Sunset · ステアウェイ・トゥ・ヘブン / Stairway to Heaven · クリステルガーデン / Crystal Garden |
| E | 17% | 18.8° | 30% | ホリデーコース / Holiday · 白樺コース / Shirakaba · センターコース / Center · Juicy Fruit / Juicy Fruit |
| SE | 16.5% | 17.4° | 25% | グリーンコース / Green · スーパーコース / Super · ファミリーコース / Family · クルーザーコース / Cruiser |
| S | 18.5% | 16.8° | 24% | だべさ / Dabesa · ジュニアコース / Junior · スーパースーパースティション / Superstition · なまら / Namara |
| SW | 12% | 16.7° | 25% | ファミリーコース / Family · ネクストステージ / Next Stage · パノラマコース / Panorama · パラダイスコース / Paradise |
| W | 6.5% | 20.2° | 36% | メルヘンコース / Merchen |
| NW | 5.9% | 20° | 34% | — |

- Highest point (DEM): 1306 m · Lowest point (DEM): 166 m · Vertical drop: 1140 m
- Dominant aspects: S · E
- Lift wind exposure (MODEL PARAMETER): High (open alpine — lifts stop most often)

## Furano

| Aspect | Share of cells | Mean slope | Share ≥25° | Example runs |
|---|---|---|---|---|
| N | 14.4% | 26.3° | 57% | — |
| NE | 18.7% | 21.8° | 42% | 連絡C / Link Run · ロープウェー / Ropeway · テクニカル / Technical · レディースダウンヒル / Ladies Downhill |
| E | 26.2% | 17.5° | 29% | 林間 / Rinkan · ザイラー / Sailer · レッスン / Lesson · ジュニア / Junior G |
| SE | 15.7% | 22.1° | 42% | くまげら / Kumagera · 小壁 / Kokabe · スピース / Spies |
| S | 6.7% | 26.8° | 60% | ロマンス / Romance |
| SW | 4.4% | 31° | 81% | — |
| W | 6.6% | 28.9° | 72% | — |
| NW | 7.2% | 28.8° | 71% | — |

- Highest point (DEM): 1167 m · Lowest point (DEM): 167 m · Vertical drop: 1000 m
- Dominant aspects: E · NE
- Lift wind exposure (MODEL PARAMETER): Medium

## Kiroro

| Aspect | Share of cells | Mean slope | Share ≥25° | Example runs |
|---|---|---|---|---|
| N | 16.4% | 18.9° | 27% | ゲートウェイコース / Gateway Course |
| NE | 11.7% | 22.7° | 44% | — |
| E | 8.5% | 25.9° | 57% | — |
| SE | 2.8% | 21.8° | 38% | 余市第2-A / Yoichi Course 2-A · 余市第2-B / Yoichi Course 2-B |
| S | 5.8% | 17.9° | 20% | — |
| SW | 14.2% | 17.4° | 19% | 長峰第1 / Nagamine Course 1 · 朝里パノラマ / Asari Panorama · 朝里第1ーB / Asari Course 1-B · 朝里第1ーA / Asari Course 1-A |
| W | 20.5% | 16.9° | 16% | 朝里第2ーA / Asari Course 2-A · 長峰第2-Aコース / Nagamine Course 2-A · 長峰第2-Bコース / Nagamine Course 2-B · エキスパートA / Expert A |
| NW | 20.2% | 17.1° | 20% | 余市第1-B / Yoichi Course 1-B · 朝里ダイナミックコース / Asari Dynamic · センターB / Center B · 余市第1-A / Yoichi Course 1-A |

- Highest point (DEM): 1298 m · Lowest point (DEM): 477 m · Vertical drop: 821 m
- Dominant aspects: W · NW
- Lift wind exposure (MODEL PARAMETER): High (open alpine — lifts stop most often)

## Hoshino Tomamu

| Aspect | Share of cells | Mean slope | Share ≥25° | Example runs |
|---|---|---|---|---|
| N | 7.8% | 23.2° | 42% | — |
| NE | 12.2% | 23.1° | 39% | ナスタ−コース / Knaster |
| E | 12.9% | 19.9° | 30% | ハイウェイコースター / Highway Coaster · エキシビジョン / Exhibition · クネクネフォレスト / Twisting Forest · パノラマリッジ / Panorama Ridge |
| SE | 17.4% | 19.5° | 26% | シルバーベル / Silver Bell · ドラゴンリッジ / Dragon Ridge · ビギナーズチョイス / Beginner's Choice · シルキーウェイ / Silky Way |
| S | 18.7% | 19.4° | 28% | サンシャイン / Sunshine · フェアリーウッズ / Fairy Woods · ハローニポコース / Hello Nipo · グランプリZ / Grand Prix Z |
| SW | 15.3% | 21.7° | 39% | ヴィーナス / Venus · ジェミニ / Gemini · ムーンシャイン / Moonshine |
| W | 9.8% | 23.6° | 49% | ロードトゥゴンドラ / Road to Gondola |
| NW | 6% | 24.5° | 47% | — |

- Highest point (DEM): 1237 m · Lowest point (DEM): 507 m · Vertical drop: 730 m
- Dominant aspects: S · SE
- Lift wind exposure (MODEL PARAMETER): Medium

## Sapporo Kokusai

| Aspect | Share of cells | Mean slope | Share ≥25° | Example runs |
|---|---|---|---|---|
| N | 21.4% | 15.6° | 15% | — |
| NE | 24.2% | 15.2° | 13% | 林間コース / Forest Trail · ウッデイーコース / Woody Trail · エコーコース / Echo Trail |
| E | 20.3% | 17.2° | 20% | ダウンヒルコース / Downhill · スウィングコース / Swing Trail · Märchen Trail / Märchen Trail |
| SE | 14.8% | 18.9° | 24% | メルヘンコース / Märchen Trail · ファミリコース / Family Trail |
| S | 3.6% | 21.6° | 37% | — |
| SW | 2% | 23.4° | 43% | — |
| W | 3.9% | 23.5° | 44% | — |
| NW | 9.7% | 21.8° | 38% | — |

- Highest point (DEM): 1280 m · Lowest point (DEM): 553 m · Vertical drop: 727 m
- Dominant aspects: NE · N
- Lift wind exposure (MODEL PARAMETER): Medium

## Kamui Ski Links

| Aspect | Share of cells | Mean slope | Share ≥25° | Example runs |
|---|---|---|---|---|
| N | 10.2% | 17.7° | 17% | 林道 / Logging Road · ダイナミック / Dynamic |
| NE | 9.8% | 19.4° | 22% | — |
| E | 5.3% | 17.1° | 15% | — |
| SE | 1.9% | 16.5° | 13% | — |
| S | 2.7% | 15.1° | 10% | — |
| SW | 13.7% | 14.6° | 7% | — |
| W | 36.8% | 14.7° | 9% | ゴールド3 / Gold 3 · ゴールド2 / Gold 2 |
| NW | 19.7% | 14.5° | 9% | 初心者コース / Next Step · 連絡 / Link · 白樺2 / Shirakaba 2 · ゴールド2 / Gold 2 |

- Highest point (DEM): 794 m · Lowest point (DEM): 70 m · Vertical drop: 724 m
- Dominant aspects: W · NW
- Lift wind exposure (MODEL PARAMETER): Medium

## Asahidake

| Aspect | Share of cells | Mean slope | Share ≥25° | Example runs |
|---|---|---|---|---|
| N | 6.1% | 18.2° | 25% | — |
| NE | 1.9% | 14.6° | 15% | — |
| E | 2% | 14.1° | 13% | — |
| SE | 7.4% | 18.6° | 27% | — |
| S | 18.9% | 19° | 28% | — |
| SW | 23.5% | 17.4° | 22% | C / C · D / D · A / A · B / B |
| W | 23.8% | 17.6° | 23% | — |
| NW | 16.4% | 18.6° | 25% | — |

- Highest point (DEM): 1755 m · Lowest point (DEM): 664 m · Vertical drop: 1091 m
- Dominant aspects: W · SW
- Lift wind exposure (MODEL PARAMETER): High (open alpine — lifts stop most often)

## Asarigawa Onsen

| Aspect | Share of cells | Mean slope | Share ≥25° | Example runs |
|---|---|---|---|---|
| N | 15.2% | 20.3° | 31% | — |
| NE | 17% | 18.3° | 23% | Purple / Purple · Green B / Green B · Red B / Red B · RED A / RED A |
| E | 24.6% | 18.9° | 24% | Yellow B / Yellow B · Yellow A / Yellow A |
| SE | 16.6% | 19.9° | 31% | — |
| S | 3.8% | 17.8° | 23% | — |
| SW | 3.6% | 20.6° | 33% | — |
| W | 8% | 19° | 27% | — |
| NW | 11.2% | 20.6° | 34% | — |

- Highest point (DEM): 770 m · Lowest point (DEM): 93 m · Vertical drop: 677 m
- Dominant aspects: E · NE
- Lift wind exposure (MODEL PARAMETER): not set

## Snow Cruise ONZE

| Aspect | Share of cells | Mean slope | Share ≥25° | Example runs |
|---|---|---|---|---|
| N | 26% | 16.1° | 15% | — |
| NE | 25.8% | 14.4° | 11% | — |
| E | 21.6% | 16.2° | 14% | — |
| SE | 8.8% | 19.5° | 27% | — |
| S | 1.9% | 24° | 50% | — |
| SW | 0.7% | 17.4° | 15% | — |
| W | 3.7% | 20.5° | 28% | — |
| NW | 11.4% | 19.3° | 25% | — |

- Highest point (DEM): 463 m · Lowest point (DEM): 0 m · Vertical drop: 463 m
- Dominant aspects: N · NE
- Lift wind exposure (MODEL PARAMETER): not set

## How the model works

- **SOURCE FACT** Snow-liquid ratio (SLR) = snow depth ÷ melted water depth. The Japan Meteorological Agency’s “dry snow” threshold is 2.0 cm/mm.
- **SOURCE FACT** Furano City’s published “fuwa-sara” index anchors 50 points at SLR 2.0 cm/mm (source: Cold Region Technology Conference Vol.39 (2023); bonchipowder.com).
- **SNOWWIND INFERENCE** We map dryness as 25 × SLR. That linear mapping is SnowWind’s own inference — the published work does not give a mapping formula.
- **SNOWWIND INFERENCE** SLR is estimated from temperature with a Kuchera-lite heuristic (not the original NWS formula).
- **MODEL PARAMETER** These values feed SnowWind’s own powder model only. They are not an official forecast.

## Questions

### Is “share of cells” the same as skiable area?

No. It is the distribution of 5–45° DEM grid cells inside the baked extent by aspect. No resort boundary and no piste mask are applied. For run-level data see each resort’s runs & lifts page.

### Why only 5–45°?

Below 5° is effectively flat; above 45° in Hokkaido resort terrain is usually cliff or non-skiing ground. The band is a common convention for terrain statistics.

### Why does aspect matter?

After the same snowfall, sun and wind exposure differ by aspect, so the snow surface preserves very differently. Deciding which aspect is best on a given day needs that day’s wind and sun — static statistics cannot answer it.

### How often do these numbers change?

Terrain data changes only when the 3D maps are re-baked. Every build records its timestamp and a SHA-256 of every input file; the data version in the footer is exactly that.

### Can I cite this page?

Yes — please credit “SnowWind”, this URL and the data version. The underlying terrain and run data have their own sources, listed under Sources below.

## Sources & citation

- Terrain: Processed from the Geospatial Information Authority of Japan (GSI) Fundamental Geospatial Data — Digital Elevation Model
- Runs: © OpenStreetMap contributors · Open Database License (ODbL)
- Run data curation: OpenSkiMap
- Statistical method: SnowWind
- 出典:基盤地図情報(数値標高モデル)(国土地理院)を加工して作成
- © OpenStreetMap contributors

Cite this page: SnowWind, https://www.ykhokkaido.com/en/powder/data, Data version 2026-09-17T06:02:38.627Z