English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Sediment replenishment below dams is an increasingly common practice in Japan to compensate sediment deficits downstream and improve habitat quality and ecological functions. We reviewed implementation methods in the context of sediment placement, and compared the design and implementation activities undertaken in the Nunome River of Japan and Trinity River of California. Nunome River was supplied with a maximum of 500 m of mixed sand-gravel to the stream channel from a single site through a high-flow stockpile method during a relatively small (80 m/s) and short (less than 4 hours) peak flow. Trinity River was supplied through an in-channel stockpile, highflow stockpile and high-flow direct injection in combination with mechanical rehabilitation with the aim of re-creating gravel bar features through fluvial processes. More (max 51,000 m) and greater (gravel to boulder) sediment has been added from more than four sites along the downstream channels during a longer (max 5 days) and higher (up to 311 m/s) peak flow regime that are designated depending on the water year types which are determined by systematic analyses in a given year. This comparative study provides the present programs in Japan with some recommendations that will inform proper methods corresponding to riverspecific high-flow and sediment regimes.

Sediment replenishment to downstream reaches below dams: implementation perspectives