LakePond Template

 

Elevation - LakePond may have an elevation.

 Stage (Found with the Fcode)

Average Water Elevation  - The stage of a natural water body that prevails for the greater

part of  the year.

       

Date of Photography - The stage that exists at the date of photography.

       

High Water Elevation - The stage that prevails when a natural water body is at or near

capacity.    

       

Normal Pool - The stage of an artificially impounded water body that prevails for the

greater part of the year.

      

Spillway Elevation - The stage of an artificially impounded water body as determined by

the spillway.

 

Delineation

The limit of LAKE/POND where STREAM/RIVER enters or leaves, is determined by the

conformation of the land.

 

The limit of a naturally formed, perennial LAKE/POND is the position of shoreline when the

water is at the stage that prevails for the greater part of the year (Average Water Elevation)

or if this limit cannot be determined, the visible edge of the water body (Date of

Photography).

 

The limit of an artificially formed, perennial LAKE/POND is the position of shoreline when

the water is at the stage that prevails for the greater part of the year (Normal Pool), or if this

limit cannot be determined, the limits defined by the spillway (Spillway Elevation), or the

visible edge of the water body (Date of Photography).

 

The limit of an intermittent LAKE/POND is the position of shoreline when the water is at the

stage that prevails when the feature is at or near capacity (High Water Elevation) or, if this

limit cannot be determined, the visible edge of the water body (Date of Photography).

 

Data Extraction

Capture Conditions

 

If LAKE/POND is in an arid area,

Or

If LAKE/POND is not in an arid area and is 0.05" along the shortest axis, then

capture.

 

Attribute Information

 

If Hydrographic Category = Intermittent,

Then Stage = High Water Elevation,

Or

If High Water Elevation cannot be determined,

Then Stage = Date of Photography.

 

If LAKE/POND is a natural lake, and Hydrographic Category = Perennial,

Then Stage = Average Water Elevation,

Or

If Average Water Elevation cannot be determined,

Then Stage = Date of Photography.

 

If LAKE/POND is an artificially impounded lake, and Hydrographic Category =

Perennial, and the water level is reasonably constant,

Then Stage = Normal Pool.

 

If LAKE/POND is an artificially impounded lake, and Hydrographic Category =

Perennial, and the water level is not reasonably constant,

Then Stage = Spillway Elevation.

 

If LAKE/POND is an artificially impounded lake, and Hydrographic Category =

Perennial, and the Normal Pool or Spillway Elevation cannot be determined,

Then Stage = Date of Photography.

 

See INUNDATION AREA for capture of flood elevation.

 

If LAKE/POND has a printed elevation on a 1:24,000-scale graphic,

Then Elevation = (Integer Value)

Else Elevation = Unspecified.

 

Source Interpretation Guidelines

 

All

Do not capture dry lakes as LAKE/POND. See PLAYA.

 

Refer to the feature definition to decide how to categorize a given feature

instance. Do not use the proper name of the feature as a guide. Many

features that are known  as "Reservoirs" or labeled on the graphic as

"Reservoirs" will be captured as LAKE/PONDS. "Stock Tanks" may be

RESERVOIR or LAKE/POND depending on their form. As a general rule, if a

water body has a geometric shape or other information indicates it is

contained by a constructed basin, capture it as RESERVOIR. If it does not

appear to be contained by a constructed basin, capture it as LAKE/POND.

 

The minimum size for islands within LAKE/POND is 0.03" along the shortest

axis.

 

Graphic

 

If Elevation shown on map is preceded by "Spillway",

Then Stage = Spillway.

 

If Elevation is collected from the graphic, and LAKE/POND is artificially impounded, and "Spillway (elevation)" is not printed,

Then Stage = Normal Pool.

 

Revision – General

 

If image shows lower than average water level, then capture LAKE/POND at a

normal pool or average water level by using ancillary sources or evidence of

water marks on images.

 

If image shows lower than average water level and the average water

elevation or normal Pool elevation cannot be determined, then capture

LAKE/POND at the visible edge of the water body. If image shows higher

than average water level, then capture LAKE/POND at a normal pool or

average water level by using ancillary sources.

 

If image shows higher than average water level and the average water

elevation or normal pool elevation cannot be determined, then capture

LAKE/POND at the visible edge of the water body.

 

Within a newly added manmade LAKE/POND, retain contours, single and

double-line drains, blue water tint, drain names, PLSS subdivisions, and civil

boundaries. All other features are deleted.

 

Revision - Standard

 

Revision - Limited

 

Use ancillary source when the collection of Elevation is required.

 

Encode the value for Hydrographic Category by looking at the surrounding

drainage.

 

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