Klamath National Forest
Geographic Information System
Theme Documentation
Revision Date: November 1996
Theme: Fish Species Range
Disclaimer:
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The Klamath National Forest cannot assure the
reliability or suitability of this information
for a particular purpose. Original data was
compiled from various sources. Spatial
information may not meet National Map Accuracy
Standards. This information may be updated
without notification.
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Project Name: KNF Base Layer
IDENTIFICATION INFORMATION
Coverage Extent: Forest-wide
Source: 1:126720 manuscripts provided by forest/district
fisheries biologists, ocular transfer to 1:24000
stream data
Last Update: 1994
Primary Feature Type:Line
Other Feature Types:
Distribution Limitations: None
Data Resolution: 1:24000
Projection: UTM Zone 10
Comments: SOURCE INFORMATION
Source System: Arc/Info
Source Scale: 1:24000
Source Projection: UTM Zone 10
Capture Method: on-screen attributing
CUSTODIAN INFORMATION
Contact Organization:KNF Supervisor's Office
Resource Contact: Alan Olson, Fisheries Biologist
Phone:916-842-6131 Email:
Address: 1312 Fairlane Road
Yreka, CA 96097
GIS Contact: Dianne Torpin, KNF Supervisor's Office, GIS
Staff
Phone:916-842-6131 Email:
Address: 1312 Fairlane Road
Yreka, CA 96097
PROCESSING INFORMATION
Theme Generation: Forest & Ranger District fisheries biologists
marked up 1:126720 maps to indicate the known,
suspected & historic range of both native &
introduced fish species. This information was
transferred on-screen to 1:24000 scale streams
derived from Cartographic Feature Files (CFF).
In the case of double-line streams, the right
bank (looking downstream) was attributed and the
left bank was removed. In the case of lakes &
other large waterbodies, a new line was
digitized down the approximate center of the
waterbody and attributed.
For stream segments occurring on the quads
between the KNF westside & eastside for which
1:24000 data does not exist, stream segments
were brought in from 1:100000 data (bad boy! bad
boy!).
Lineage:
For more detailed information, see the Edit Log for this theme. ATTRIBUTE INFORMATION
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System Software: Arc/Info
Table Name:.AAT
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Item Name: str-code Item Type: char Item
Length: 1
Item Value Description
I Intermittent stream
P Perennial stream
(NOTE: attributing may be incomplete for this item, as it is not
essential to the theme)
Item Name: fish_range Item Type: char Item
Length: 1
Item Value Description
A Anadromous fish species present
R Resident fish species present
B Anadromous & resident fish species present
C Catadromous fish species present
N Non-habitat
Item Name: pacific_lamprey Item Type: integer Item
Length: 5
river_lamprey
pac_brk_lamprey
.......(etc.).........
108 unique species, not all of which are present on the
forest.
Item Value Description
The attribute for species presence is composed of two parts: the
first number indicates historical occurrence status and the second
number indicates verification status.
Codes for historical occurrence are:
0 Non-native: fish species not currently present, nor documented
to have been native to the location.
2 Extirpated: fish species not currently present, yet historic
surveys, records, and/or literature provide documentation of
historic presence as a native species to the location.
3 Native: fish species native to location
4 Introduced: fish species literature and historical records
provide documentation that species was not native to the
location.
Codes for species verification are:
1 Present: species are present as documented by recent (1985 and
newer) snorkel surveys, visual surveys, electrofishing and other
collection methods.
2 Suspected: presence of species is suspected but recent (1985 and
newer) surveys have not been conducted to verify presence, nor
has species been otherwise documented within a recent timeframe.
3 Unknown: presence of species is not suspected, surveys have not
been conducted, or the species has not otherwise been documented.
4 Potential: species not currently found, yet recent (1985 and
newer) surveys indicate that suitable habitat is present.
Historical records, written and oral, may/may not indicate
species presence in the past.
5 None: no documented species presence or suitable habitat.
6 Present in very low numbers: species are present as documented by recent (1985 and
newer) snorkel surveys, visual surveys, electrofishing and other
collection methods.
Example of complete code:
chinook fall = 31: Fall Chinook is native (3) and present (1)
chinook_spring = 24: Spring Chinook is extirpated (2) but
potential (suitable habitat is present).