LIST OF DATA FILES AnalyticAttributes.csv. File contains notes taken during collection of analytic chemistry samples, location data for transect samples, and other information that may assist with analysis of the analytical chemistry data. Analytic Results.csv. This dataset includes the laboratory analytical information for all samples collected for analysis of metals, organic carbon, and anions as described in the "Methods.txt" file. For this project, we collected snow, soil, dust, wetland sediment, water, periphyton, and tadpole tissue. ANC_WQ_Study_2009.xlsx. This excel file contains summary information from a pilot-scale study that was conducted in the fall of 2009 to inform the sampling design of the Kenai study that is the focus of this data submission. AnchorageSampleLog.csv. This file contains information about sites sampled for the Anchorage Water Quality Pilot Study and a join field to the “SiteLocations.csv” file, which provides the latitude and longitude for all sites included in this data submission. AnchorageSedimentMetals.csv. This file provides metals concentrations in sediment for the Anchorage 2009 study. These are sediment digest samples analyzed by ICP/MS for metals, and are comparable to the sediment samples from the Kenai data set, based on the methods used. AnchorageWaterMetals.csv. File provides metals concentrations in water for the Anchorage 2009 study. These are metals data from unfiltered water samples, and are comparable to the samples labeled as sample type, “total” from the Kenai data set, based on the methods used. BDFilterResults.csv. Data set includes information on 222 water filters that were analyzed for Bd (Batrachochytrium dendrobatidis), a fungal pathogen that can cause chytridiomycosis in amphibians. BreedingMetamorphosisDates.csv. Data in this file describe the developmental period of Lithobates sylvaticus tadpoles in study sites from 2010 through 2012. Conductivity.csv. File contains data from 6 continuous conductivity loggers deployed at 6 study sites. DataSummaryReport.pdf. This file provides study background and repeats information in the SiteSelection.txt and Methods.txt documents with maps and other figures as well as describes each data file in this submission. FrogAbnormalities.csv. This data set includes information on abnormalities in each of the 9,011 individual amphibians surveyed on the Kenai Refuge between 2000 and 2012. FrogDevelopment.csv. This table describes each site visit from 2010–2012, whether frogs were found and what developmental stage they were, and how much time was spent assessing the site and performing the frog survey. Habitat.csv. Data set includes habitat data, including vegetative, structural, and sediment characteristics of the site and the surrounding area. Invert.csv. Data set includes information on invertebrates. Effort was made to survey the entire invertebrate community, not just predators of larval amphibians. Kenai_Roads_AmphibianAbnormalities_ClimateChange_Proposal.pdf This file describes the original background, goals, and objectives for the study. Methods.txt. This file describes field methods in a .txt format to ensure readability in multiple computer formats. Text in this document is repeated with maps and other figures in the “DataSummaryReport.pdf” file included with this data submission. RoadsInfo.csv. File provides measures of distance from each wetland site to the nearest road and whether that road was paved or gravel. SiteSelection.txt. Description of methods for choosing study sites by stratified random design. This file describes site selection in a .txt file to ensure readability in multiple computer formats. SiteEvents.csv. Data set includes monitoring data collected approximately every 14 days during the summer months. SiteLocations.csv. File contains location information for all wetland sites in Kenai and Anchorage. Limited water quality and metals data are available for sites in Anchorage. Some sites in Kenai only have location and frog abnormality data, and link to the “abnormality.csv” dataset. Temperature.csv. File contains information from continuous temperature loggers deployed at each site for the summer months during 2010-2012. WaterQuality.csv. This table describes water quality information collected with a handheld water quality meter between 2010 and 2012. WaterQualityBDFilters.csv. This table describes water quality information collected with a handheld water quality meter concurrent with and spatially collocated with Batrachochytrium dendrobatidis samples in water. WetlandDepthVolume.csv. Data set includes wetland depth, area, and volume.