| Area | S.F. Trinity |
| Topic | Nitrate: Hayfork Creek at Six Sites 1994-1995 |
| Caption: Ammonia in surface water breaks down to NO2 (nitrites) and then rapidly to NO3 (nitrates) which is readily used by aquatic plants. Nitrates are often a limiting factor for growth of plants in the aquatic environment. Excessive growth of aquatic plants, fueled by an excess of nitrates can cause an algae bloom which can lead to major fluctuations in dissolved oxygen. Nitrate levels in Hayfork Creek and lower Salt Creek were measured by the Trinity County RCD and Weaverville NRCS staff in 1994-1995. Carr Creek was only monitored in November 1995. | |
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