Native Fish Community Richness Relative to Expected (HUC8 watersheds)

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Species richness scores for all HUC8 watersheds that contain historic richness data for California. Each watershed was given a score dependent on the ratio of current richness to historic richness. Scores equaling 100 represent no loss in richness over time or even gains in richness. A score of 50 represents a loss of 50% richness between the historic and current species richness in each HUC8. Absence of a score means that no information is available for historic or current fish distributions in that particular HUC8.