In 2006, 2007 and 2010, fish communities, water quality, and physical habitat were sampled at Wilson's Creek, Skegg's Branch (also known as Schuyler Creek), and Terrell Creek to determine the status and long-term trends in fish community composition and to correlate this community data to water quality and habitat conditions.

The U.S. Geological Survey (USGS), a nonregulatory Federal science agency with national scope and responsibilities, is uniquely positioned to serve the Nation's needs in understanding and responding to global change, which includes changes in climate; sea level; land use and land cover; ecosystems; and the global water, carbon, and nitrogen cycles. Global change is among the most challenging and formidable issues confronting our Nation and society. Scientists agree that global environmental changes during this century will have far-reaching societal implications Intergovernmental Panel on Climate Change (IPCC), 2007; USGCRP, 2009]. In the face of these complex challenges, the Nation can benefit greatly by using natural science information in decisionmaking.

In 2002, a fine-grained sediment (sand, silt, and clay) monitoring effort was initiated in the Colorado River ecosystem, the river corridor downstream from Glen Canyon Dam, to directly survey channel topography at scales previously unobtainable in this canyon setting. This report presents an overview of the equipment and the methods used to collect and process the high-resolution bathymetric data required for this monitoring effort.

The purpose of this report is to inform the MOU agencies, stakeholders, and the public about the current status and trends of wet nitrogen deposition at RMNP. The MOU agencies will use the information provided in this annual report to make a determination of whether the interim milestones have been achieved in 2013, 2018, 2023, and 2028.

The National Park Service's Arctic Network (ARCN) seeks to understand the natural resources and to detect changes and trends in those resources in five NPS units, including Gates of the Arctic National Park and Preserve, Kobuk Valley National Park, Noatak National Preserve, Cape Krusenstern National Monument, and Bering Land Bridge National Preserve (Figure 1).

This document describes the concept, organization, and application of a hierarchical ecosystem classification that integrates saline and tidal freshwater reaches of estuaries in order to characterize the ecosystems of large flood plain rivers that are strongly influenced by riverine and estuarine hydrology. We illustrate the classification by applying it to the Columbia River estuary (Oregon-Washington, USA), a system that extends about 233 river kilometers (rkm) inland from the Pacific Ocean. More than three-quarters of this length is tidal freshwater.

Beaches serve as a natural barrier between the ocean and inland communities, ecosystems, and natural resources. However, these dynamic environments move and change in response to winds, waves, and currents. During extreme storms, such as powerful hurricanes, changes to beaches can be large, and the results are sometimes catastrophic. Lives may be lost, communities destroyed, and millions of dollars spent on rebuilding.

This report summarizes the results of the 2002-2003 inventory of birds, mammals, and herpetofauna, summarizes historic information, and contains brief accounts of each species present or expected to occur in the Whitman Mission National Historic Site (WHMI). Information on species that are possible but unlikely to occur in the mission is also included.

The purpose of this study was to collect baseline water quality information on the Sound and the freshwater brooks flowing into the Sound. A depauperate water quality data base and concern over the potential for increased residential development throughout the Somes Sound watershed were incentives for initiating this study.

This annual report details the status of key indicators of water quality obtained from monitoring that occurred in Whitman Mission National Historic Site (WHMI) in 2009, 2010, and 2011. WHMI natural resource staff monitored Mill Creek in 2009, Doan Creek in 2010, and Mill Creek again in 2011.