Debris Flow Occurrence and Sediment Persistence, Upper Colorado River Valley, CO.

Debris flow magnitudes and frequencies are compared across the Upper Colorado River valley to assess influences on debris flow occurrence and to evaluate valley geometry effects on sediment persistence. Dendrochronology, field mapping, and aerial photographic analysis are used to evaluate whether a 19th century earthen, water-conveyance ditch has altered the regime of debris flow occurrence in the Colorado River headwaters. Identifying any shifts in disturbance processes or changes in magnitudes and frequencies of occurrence is fundamental to establishing the historical range of variability (HRV) at the site.

Mental Health and Substance Misuse-Related Emergency Department Discharges in Urban Counties of North Carolina.

Background: National evidence suggests that there is considerable variation between regions in emergency department utilization for routine health care needs. Many emergency departments are poorly equipped to manage the needs of patients with mental health or substance misuse diagnoses, who could often be more effectively managed in other settings. We sought to quantify differences in the frequency of mental health and substance misuse-related emergency department encounters across urban counties in North Carolina.