lake
Let an agent handle lakes by name, size, depth, water quality, uses, protection and safety.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent handle lakes by name, size, depth, water quality, uses, protection and safety.
A body of relatively still water occupying a basin on land, larger than a pond, natural or artificial, including sacred lakes, reservoirs and bathing lakes.
What it is for: Lakes supply water, support ecosystems, fisheries and recreation.
It can be swim, boat and fish, where allowed; monitor water quality; protect habitats; manage water levels.
Distinguishing features
Still water in a basin
Larger than a pond (definitions vary)
Natural or artificial
Can freeze, stratify and bloom with algae
What it looks like
An expanse of open still water surrounded by land.
Physical character
largest by area: about 371000 km2 - Caspian Sea, often classed as a lake
deepest: about 1642 m - Lake Baikal
How it is recognised
Enclosed standing water
Names on maps and gazetteers
Bathing water signs
Related models
is a kind of - standing water
is a kind of - basin
provides - supply
is protected by - rules
In practice
Families and kinds
tectonic, glacial and volcanic lakes
reservoirs
saline lakes
sacred lakes
artificial balancing and bathing lakes
Identifiers
water body id national or WFD code management
GeoNames id numeric gazetteer
Standards and regulation
EU Water Framework Directive
Bathing Water Directive
Local boating and fishing rules
Failure modes and hazards
Drowning and cold water shock
Toxic algal blooms
Thin ice
Also called
+77
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.lake-2
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Identity Which lake.
Names and ids.
Name
Official name.
Name
Name and ids.
- What is the lake name and id? provenance
- Is it natural or artificial? definition
Size
Area and depth.
Size
Size and depth.
- What are its area and depth? measurement
- From which survey? provenance
Water Quality and levels.
Quality decides safety.
Quality
Bathing and ecology.
Quality
Water quality.
- What is the current water quality? measurement
- Is there an algal bloom warning? boundary
Levels
Management.
Levels
Water levels.
- How are levels managed? definition
- Is there drought or flood risk? boundary
Use Recreation and supply.
Uses need rules.
Recreation
Swimming, boating.
Recreation
Recreation rules.
- Is swimming or boating allowed? boundary
- Which permits are needed? boundary
Supply
Drinking water.
Supply
Water supply use.
- Is it a drinking water source? definition
- What restrictions apply? boundary
Safety and culture Risks and meaning.
Safety and respect.
Safety
Cold water and ice.
Safety
Safety advice.
- What safety advice applies? action
- Is ice safe? boundary
Sacred status
Cultural meaning.
Sacred
Cultural meaning.
- Is the lake sacred to local people? boundary
- Are there restrictions? boundary
What the second pass must settle
- Should lakes be instances with water body ids?
- How should size thresholds be defined?
- How should sacred status be respected?