| Area | Stemple Creek |
| Topic | WQ: Dissolved Oxygen in Estero de San Antonio/Stemple Creek 1988-1990 |
| Caption: The graph shows average, minimum, and maximum surface dissolved oxygen concentrations measured in Stemple Creek, and its estuary Estero de San Antonio, during 1988-1990. Sampling occurred generally monthly for at least one station, with the number of surface dissolved oxygen measurements at each station ranging from 7 to 23 samples for the monitoring period. Note that Stations E-1 through E-5 are estuarine. Dissolved oxygen was much more variable in stream stations than estuary stations. The reference values represent the minimum North Coast Regional Water Quality Control Board (NCRWQCB) Stemple Creek TMDL thresholds to be met by 2004 at a specific saline (5.0 mg/L) and freshwater (6.0 mg/L) location in the watershed (Salisbury, 1997). In addition, a target of 7.0 mg/L must be met in the creek and estuary wherever and whenever the aquatic habitat is suitable for salmonid migration, rearing, and spawning and 9.0 mg/L during critical spawning and egg incubation periods, which is defined as applicable when and where anadromous fish redds are located. This monitoring was part of a water quality study of Americano and Stemple Creek watersheds by Merritt Smith Consulting for the City of Santa Rosa and U.S. Army Corps of Engineers. See Picture for a map of the sampling locations and Info Links for more details. | |
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To download the table with the chart's source data, click wq_stemple_msc_1988_1994.db (size 51,200 bytes)
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