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Site GA2: Glen Annie/Tecolotito Creek at Hollister Avenue
An
excerpt from Goleta Stream Team Newsletter Vol. 2 (Jan 2004)
Where is it?
Site GA2 is located on Glen Annie (also called Tecolotito) Creek, near the intersection of Cathedral Oaks Road and Storke/Glen Annie Road. To get there, take Storke/Glen Annie Road towards the mountains. Continue across the 101 freeway until you reach the light at Cathedral Oaks. Immediately after this intersection, turn left into a large dirt pullout and park here. There is a poorly maintained pathway leading into the the brush: follow it straight and then to the right (towards the mountains). Be very careful as you will soon reach a very steep creek bank that is nearly vertical! Stay right along the creek bank, until you reach a path leading down to the creek. Sample here.What is unique about this site?
This site is at the base of the foothills in Goleta. The main land uses near this site are agriculture and a golf course. Irrigation waters that flow from these sites contain high levels of fertilizers, pesticides, and other contaminants. This runoff makes its way into Glen Annie/Tecolotito Creek near site GA2 and eventually into Goleta Slough. We also sample another site on this creek (GA1) that is further downstream, after it has passed through the 101 corridor and more urban land uses. Therefore GA2 is unique because it shows the impacts of only the golf course and agriculture nearby, without the “urban” impacts.Results at this site:
Because of the reasons mentioned above, site GA2 has fairly poor water quality. This poor rating is mainly due to high nutrient levels, which are caused by runoff from the nearby land uses. High nutrient levels can cause rapid growth of vegetation that can virtually “choke” the creek and also the Slough. Aside from the nutrients, most other results fall within normal ranges: temperature, pH, and conductivity are all normal while turbidity and dissolved oxygen are slightly above aver-age. Bacteria levels here are not great: the site meets State water quality standards for bacteria about half of the time, but always fails during a storm event.