Two Types of Model

DRERIP is developing two types of conceptual models: species life history models and ecosystem models.

The species models describe the life cycles of key species, including Delta smelt, longfin smelt, Sacramento splittail, striped bass, Chinook salmon (4 runs), Central Valley steelhead, green sturgeon and white sturgeon.

The life history models articulate the current state of knowledge of factors influencing the life histories of those species.

Ecosystem models have been categorized into Processes, Habitats and Stressors.

Open each conceptual model by clicking on its box in the diagram above or in the list to the right. Currently available models are shown as blue, underlined links in the list. The other models will be coming soon.

Models prepared by well-known experts

DRERIP extends its thanks to the 60+ experts who worked collaboratively to develop the conceptual models. These experts are listed by name and affiliation here: DRERIP Model Development Team (PDF)

Use of the Models

Use of the Delta Conceptual Models (PDF)

Incorporation of New Information

It is DRERIP's intent to periodically update these conceptual models to capture emerging knowledge. As new information becomes available and the models are updated, management actions will be adjusted to reflect this new learning in an adaptive management approach.