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Preliminary FEMA flood maps for Sierra Valley show expanded flood zones; county plans workshop
Summary
County planning staff presented revised, higher‑resolution preliminary FEMA flood maps for Sierra Valley that indicate substantial portions of Sierraville, Sierra Brooks and Loyalton may be in updated flood zones; staff proposed a Dec. 4 community workshop and warned maps could become effective in about 18 months.
Brandon Bagman, Sierra County planning director, presented FEMA’s latest preliminary flood mapping for Sierra Valley, explaining the maps’ multi‑year history and why the current round shows more detailed flood hazard areas across much of the valley.
Bagman said the new maps are higher resolution and in many places represent an improvement in technical detail, but they nonetheless show extensive 1%‑annual‑chance flood risk in the valley. He cautioned that some communities — notably the city of Loyalton — may find nearly all properties…
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