A Basis for extending long-term streamflow forecasts in the Colorado River basin

Document Type



The National Weather Service (NWS) maintains a collection of computer models used to perform various functions for managing the rivers of the United States. One function of the NWS's river forecast centers is to provide long‐term resource forecasts for the main river basins in the U.S. Using SVD analysis, the research presented here identifies a new SST index which demonstrates significant, long‐lead covariance with streamflow in the Colorado River Basin. This index is compared to other existing climate indices using the non‐parametric Rank Sum test and by also using the index in a forecasting scenario.


Climate; Colorado River; Forecasting; North America – Colorado River Watershed; Ocean temperature; Rank sum; Sea surface temperatures; SVD; Streamflow – Forecasting; Water supply – Forecasting


Climate | Environmental Sciences | Other Oceanography and Atmospheric Sciences and Meteorology | Water Resource Management


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Publisher Citation

Lamb, K., Piechota, T., Aziz, O., and Tootle, G. (2011). ”Basis for Extending Long-Term Streamflow Forecasts in the Colorado River Basin.” J. Hydrol. Eng. 16, SPECIAL ISSUE: Modeling of Hydroclimate and Climate Change, 1000–1008. doi: 10.1061/(ASCE)HE.1943-5584.0000153

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