Streamflow routing optimization : Hydrologic Engineering Center computer program 23-J2-L231.

At head of cover title: Generalized computer program.

Reservoir yield : Hydrologic Engineering Center computer program 23-J2-L245.

At head of cover title: Generalized computer program.

Unit graph and loss rate optimization : Hydrologic Engineering Center computer program 23-J2-L211.

At head of title : Generalized computer program.

Monthly streamflow synthesis program : Hydrologic Engineering Center computer program 24-J2-L243.

At head of cover title: Generalized computer program.

The continuous-record streamflow data-collection program in Maine.

Mode of access: Internet.

Thickness Changes on Whillans Ice Stream and Ice Stream C, West Antarctica, Derived from Laser Altimeter Measurements

Repeat airborne laser altimeter measurements are used to derive surface elevation changes on parts of Whillans Ice Stream and Ice Stream C, West Antarctica. Elevation changes are converted to estimates of ice equivalent thickness change using local accumulation rates, surface snow densities and vertical bedrock motions. The surveyed portions of two major tributaries of Whillans Ice Stream are found to be thinning almost uniformly at an average rate of similar to 1 m a(-1). Ice Stream C has a complicated elevation-change pattern, but is generally thickening. These results are used to estimate the contribution of each surveyed region to the current rate of global sea-level rise.