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Range Coding

8-digit Hydrologic units were used to delineate species ranges.  PDF images are found below to provide context in reviewing these species.

HUCS with Counties
HUCS with major streams and lakes
HUCS with major roads
HUCS with elevation

Map and Analysis Range Coding

Map Number

Code

Description

17

k12

Known or probable occurrence, breeding, wintering

18

k13

Known or probable occurrence, breeding, summering

19

k14

Known or probable occurrence, breeding, winter and summering

21

k21

Known or probable occurrence, non-breeding, migratory

22

k22

Known or probable occurrence, non-breeding, wintering

23

k23

Known or probable occurrence, non-breeding, summering

24

k24

Known or probable occurrence, non-breeding, winter and summer

29

k34

Known or probable occurrence, breeding and non-breeding, winter and summer

38

p13

Potential occurrence, breeding, summering

41

p21

Potential occurrence, non-breeding, migratory

42

p22

Potential occurrence, non-breeding, wintering

49

p34

Potential occurrence, breeding and non-breeding, winter and summer

61

x21

Extirpated, non-breeding, migratory

62

x22

Extirpated, non-breeding, wintering

69

x34

Extirpated, breeding and non-breeding, winter and summer

Each HUC was coded with a 3-digit code (below). 

Character in Code

Biological Relation

Code and Definition

First Character

Historic/Recent Distribution

K = Known (includes repatriated)

P = Potential

X = Extirpated

Second Character

Reproductive Use

0 = none

1 = breeding

2 = nonbreeding

3 = both

Third character

Seasonal Use

0 = none

1 = Migratory (Spring and/or Fall)

2 = Wintering

3 = Summering

4 = Winter and Summer

K34+ = Originally coded as K00.
K34* = Originally coded as P00.  This data was obtained from either CO-GAP, NM-GAP, or species occurrence data from NatureServe.

Example: K13 = for a species that is known in the watershed, breeds and summers in the watershed.

Historical/ Recent Distribution

 

Label

Description

Known

Species is known to or probable to occur within the watershed.  Species may have been repatriated recently in a portion of their historical range.

Potential

No known locations, but species could be within the watershed based on proximity and habitat characteristics.

Extirpated

Species with historical occurrence that have been chosen to be modeled. 

Reproductive Use

 

Breeding*

Species is known to breed within the watershed.

Non-Breeding*

Species is known to occur within the watershed.

Both*

Species is known to occur within the watershed throughout the year.

Seasonal Use

 

Migratory

Species is known to occur within the watershed during its regular migration in Spring and/or Fall.

Wintering

Species in known to winter within the watershed.

 

Summering

Species in known to summer within the watershed.

Winter and Summer

Species uses watershed during summer and winter

*Breeding and nonbreeding habitat may apply to bird species, bats, and some other mammal species.

 

For additional comments or questions contact
Ken Boykin

575.646.6303