sealevel
- Altitude baseline
- Elevation standard
- Climatologist's concern
- 0 on an altimeter
- Where many geographical measurements begin
- Surface area?
- Something on the rise today
- Part of New Orleans is below it
- Marine standard
- Land formation measuring standard
- It rises every year
- High ground is above it
- Elevation benchmark
- Cruising altitude?
- Average height of the ocean's water
- 0, in some measures
- The Caspian is just below it
- Denver is way above it
- Death Valley is below it
- It's affected by global warming
- Standard for altitudes
- Standard for measuring heights
- Aquatic plane
- Of average height, in the main
- Zero point of measuring system in the main
- Not quite everything contained by flood barriers after a rise - in this?
- Aquatic creature almost always next to lake causes rising concern
- Rise in this? Flood barriers up to protect nearly everything
- Rising concern?