Humboldt State
University Department of Geology
Geology 531 Graphs, Diagrams &
Maps
The documents below are in gif, jpeg, or Adobe Acrobat PDF format.
You will need the Adobe Acrobat reader or browser plug-in to view the
PDF files. You can obtain it for free from this link: Acrobat
Reader.
- Jacoby
Cr 15 minute map (jpeg -- 2.5 Mb)
- Topographic map of the Jacoby Cr drainage, in color, as jpeg
image. Scanned from USGS 15 min quads at 300 dpi.
-
- Humboldt
County rain gage locations (gif)
- Map of locations of raingages listed in Humboldt
County Rainfall Data
-
- Lab
2 Cumulative rainfall graph (pdf)
- A plot of the cumulative rainfall at 1) Eureka, 2) Honeydew
1SW, and 3) Kneeland 10SSE for the period 2100 16 Nov 1982 through
0000 20 Nov 1982.
-
- Lab
2 Thiessen basemap (pdf)
- Lab
2 Thiessen basemap (gif)
- Basemap of the Eureka - McKinleyville-Korbel-Kneeland area for
constructing Thiessen polygons
-
- Humboldt
and Del Norte County isohtyetal map
(pdf)
- Map of annual rainfall in Humboldt & Del Norte Counties,
in inches. From Rantz, S.E. (1964) Surface-Water Hydrology of
Coastal Basins of Northern California: USGS Water-Supply Paper
1754.
-
- Humboldt
and Del Norte County evapotranspiration map
(pdf)
- Map of annual potential and actual evapotranspiration in
Humboldt & Del Norte Counties, in inches. From Rantz, S.E.
(1964), Surface-Water Hydrology of Coastal Basins of Northern
California: USGS Water-Supply Paper 1754.
-
- Northern
California rainfall frequency maps
(gif)
- Maps of rainfall intensity and frequency from the USWB
Precipitation Frequency Atlas of the Western U.S., v. XI:
California.
-
- Humboldt
County dimensionless flow-duration curve
(pdf)
- Dimensionless regional flow-duration curve created by plotting
ratio of discharge to mean annual discharge (Q/Qav) vs. percent of
time for Elk River, Jacoby Creek, Little River, North Fork Mad
River, and Redwood Creek O'Kane USGS gages and averaging. Can be
used to synthesize a flow-duration curve for any Humboldt Co.
stream for which Qav (mean annual discharge) can be
estimated.
-
- Northern
California regional skew map (gif)
- Map of regional skew for log-Pearson Type III flood frequency
analysis. From U.S. Interagency Advisory Committee on Water Data
(1982) Bulletin #17B: Guidelines for Determining Flood Flow
Frequency.
-
Andre Lehre
Last updated: 4 October 2002