2025
2026



2025
2026
Managed by Cosumnes River Preserve
Since Jul 2025
In California, US
CRP102
This chronolog combines 402 photos from 362 contributors. Learn more
From the boardwalk, visitors can observe the seasonal rhythm of the managed wetlands. In fall and winter, the ponds are intentionally flooded, creating habitat for swans, geese, ducks, a variety of shorebirds, and roosting Sandhill crane.
Wetland resilience is reflected in how the landscape responds to changing water levels and temperatures throughout the year. Key indicators include:
Water Levels – Timing, depth, and duration of seasonal flooding, especially during drought or heavy rainfall years.
Vegetation Changes – Germination timing, plant diversity, and the balance between native and invasive species.
Wildlife Use – Seasonal abundance and diversity of migratory birds and waterfowl.
Habitat Condition – Soil stability, erosion, and shifts in wetland extent.
Seasonal Timing (Phenology) – Changes in flowering, migration, and drying patterns over time.
Monitoring these patterns helps demonstrate how managed wetlands adapt to climate variability while continuing to provide critical habitat.
The Cosumnes River Preserve consists of over 50,000 acres of wildlife habitat and agricultural lands owned by seven land-owning Partners. The Partners include The Nature Conservancy, Bureau of Land Management, California Department of Fish & Wildlife, Sacramento County Regional Parks, Department of Water Resources, Ducks Unlimited, and the California State Lands Commission. The Preserve is centered along the Cosumnes River, its floodplains and riparian habitat. This habitat is buffered by a variety of agricultural operations. The Preserve provides numerous social, economic, and recreational benefits to local communities and to people residing in the larger Sacramento and San Joaquin areas. The habitat supports wildlife, including birds that migrate throughout the Pacific Flyway.
Chronolog is a monitoring tool for parks, nature centers, wildlife organizations, schools, and museums worldwide. With over 100,000 contributors across 300 organizations, Chronolog is on a mission to engage communities with nature while recording important natural changes.
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