IMG_1540 : 無料・フリー素材/写真
IMG_1540 / International Joint Commission
| ライセンス | クリエイティブ・コモンズ 表示-改変禁止 2.1 |
|---|---|
| 説明 | Amy Reese, U.S. Section Secretary of the IJC’s International Kootenay Lake Board of Control, gives presentation on how construction of Columbia River Treaty dams (Libby Dam and Duncan Dam) have affected the regulation of Kootenay Lake water levels. The average annual spring peak level on Kootenay Lake has been reduced by eight feet since construction of the CRT dams. Operation of Libby Dam to improve conditions for Sturgeon increase spring flows, but not enough to cause damage. |
| 撮影日 | 2014-07-14 18:36:31 |
| 撮影者 | International Joint Commission |
| 撮影地 | |
| カメラ | Canon PowerShot G11 , Canon |
| 露出 | 0.017 sec (1/60) |
| 開放F値 | f/4.0 |
| 焦点距離 | 12493.15068 dpi |