HJ Andrews Experimental Forest

Location of th HJ Andrews Experimental Forest, Oregon, USA

Location

44.2 N, 122.2 W, in the central western Cascade Mountains of Oregon, USA

Catchment size

The main drainage within the HJA is Lookout Creek with 62 km²

Climate

The long-term mean annual precipitation varies from about 2300 mm (lower elevations) to 3550 mm (upper parts). Most of the precipitation (80%) falls between November and April, typically during long-duration frontal storms of low to moderate intensity. In the small catchments precipitation falls mainly as rainfall with snow more common at higher elevations of LOOK. While winters are generally wet and mild, summers are dry and rather cool (average of 18 °C in July).

Measurements/Equipment

Precipitation

Meteorology CS2MET (44.12.54 N, 122.14.57 W, 485 m) since 1957

Runoff

Soil Moisture

ET

Sapflow

Snow

Catchment nutrient budgets

Water residence time

Sediment transport

Links to project webpages

• HJ Andrews Experimental Forest

References

Gabrielli, C.P., McDonnell, J.J. 2012. An inexpensive and portable drill rig for bedrock groundwater studies in headwater catchments. Hydrol. Process. 26(4), 622-632, DOI: 10.1002/hyp.8212.

Graham, C.B., McDonnell, J.J. 2010: Hillslope threshold response to rainfall: (2) Development and use of a macroscale model. Journal of Hydrology 393(1–2), 77–93, DOI: 10.1016/j.jhydrol.2010.03.008

Graham,C:B., Barnard, H.B., Kavanagh, K.L., McNamara, J.P. 2013. Catchment scale controls the temporal connection of transpiration and diel fluctuations in stream flow. Hydrol. Process. 27(18), 2541-2556, DOI: 10.1002/hyp.9334

Seibert, J., McDonnell, J.J. 2010. Land-cover impacts on streamflow: a change-detection modelling approach that incorporates parameter uncertainty. Hydrological Sciences Journal 55(3), 316-332, DOI: 10.1080/02626661003683264.