Are We Improving Floodplain Health in the Puyallup Watershed?

We are tracking outcomes and benefits in the floodplain

FFTF partners want to see improvements in floodplain health as it relates to agricultural viability, increases in fish and fish habitats, and reduced flood risk to people and property. While improvements from specific capital projects, such as levee setbacks, will be monitored at the project level, the following metrics aim to track trends at a different scale using both qualitative and quantitative means.

  • Overall Floodplain Status
  • Farm Businesses
  • Farm Revenue
  • Farm Drainage
  • Cost of Flood Damages
  • Salmonids

This metric serves as a high-level qualitative assessment made by FFTF partners about the current status of the floodplain. FFTF Partners will come together from time-to-time to review results of ongoing monitoring and share first-hand knowledge to characterize the current status and condition of the floodplain. Partners will take into account the monitoring results, group knowledge, and other factors to come up with a qualitative status assessment of floodplain condition. Descriptive status categories (e.g., improving, staying the same, declining) will be discussed by FFTF Partners as well as potential weighting factors for determining status.

FFTF GOAL(S): All goals
BASELINE YEAR: 2020 (first year of reporting)
STATUS: Metric results expected in 2020
SOURCE(S): FFTF Partners

This metric reports data from the Census of Agriculture conducted by the U.S. Department of Agriculture. Census data is reported every five years and is measured across the county, not the watershed. Over the past 25 years, the number of farms in Pierce County has ranged from 989 to the 1,607 farms recorded in 2017. While the number of farms has gone up (1,607), the average farm size has gone down (28 acres) as of 2017.

 

2017 Result: 1,607 farm businesses in Pierce County

FFTF GOAL(S): Maintain viable farming economy/critical mass of farmland and farm businesses
BASELINE YEAR: 2012 USDA Census of Agriculture
STATUS: Results from the 2017 Census data were reported in 2019
SOURCE(S): US Department of Agriculture (USDA) Census of Agriculture: National Agricultural Statistics Service (NASS)

This metric reports data on the total market value of agricultural products sold from the Census of Agriculture. Although overall revenue declined substantially across the county (from $90,933,000 in 2012), the revenue from crops, which is the primary agricultural product in the Puyallup watershed, saw a $5.5 million increase from 2012.

 

2017 Result: $64,876,000 in total market value of agricultural products sold.

FFTF GOAL(S): Maintain viable farming economy/critical mass of farmland and farm businesses
BASELINE YEAR: 2012 USDA Census of Agriculture
STATUS: Results from the 2017 Census data were reported in 2019
SOURCE(S): US Department of Agriculture (USDA) Census of Agriculture: National Agricultural Statistics Service (NASS)

This metric uses a survey to track responses from farmers about drainage conditions on farms throughout the watershed for a given year. The results of the 2018 survey will serve as a baseline against which subsequent surveys will be compared to evaluate perceptions of farm drainage over time.

Poor drainage conditions can represent a major risk to agricultural viability. Good drainage is essential to agriculture because most crops cannot tolerate saturated soils or standing water during the growing season. Flooded or saturated fields can cause reduced crop yield or total loss of the crop. When fields remain saturated into the spring, it can delay planting of crops. Saturated soils or standing water in the winter can prevent farmers from planting cover crops, which many farmers use to prevent soil erosion and runoff while adding nutrients to the soil.

 

2018 Result: For the 2018 growing season, surveyed farmers ranked drainage issues as moderate.

FFTF GOAL(S):
  • Improve drainage on existing farms
  • Maintain viable farming economy/critical mass of farmland and farm businesses
BASELINE YEAR: 2018
STATUS: Baseline information collected in 2019
SOURCE(S): Survey (responses)

This metric reflects damage to structures with a flood insurance policy. This metric does not track all of the damages from flood events, nor does it reflect the full economic impact of flooding. FEMA tracks the amount of flood damage claims made each year, which provides the basis for this metric.

 

2018 Result: $0 of flood damages in 2018.

FFTF GOAL(S):
  • Make communities more resilient to flooding and reduce flood risk and damage to private property
  • Reduce flood risk and damage to public infrastructure
  • Increase the resilience of flood management infrastructure, the ecosystem, and agriculture as climate changes
BASELINE YEAR: 2018 (First year of reporting)
STATUS: Baseline information established in 2019
SOURCE(S): Federal Emergency Management Agency

Salmon are an invaluable resource in the Puyallup Watershed and FFTF partners recognize the direct relationship between floodplain restoration and salmon abundance.  As partners seek to reconnect historic floodplain and enhance habitat, they review data gathered by the Puyallup Tribe and the Washington Department of Fish and Wildlife on natural origin Chinook salmon abundance and juvenile productivity on the White and Puyallup Rivers.  The information and table below summarizes that information for the year 2018. 

For a historic comparison, the WRIA 10/12 Lead Entity performed EDT modeling of the Puyallup Watershed to develop a current conditions baseline for Chinook salmon (Mobrand Biometrics 2000 and 2004).  The results indicated greatly reduced abundances and exceptionally low productivity of less than two returning fish per spawner compared to estimated historic, pre-development values (seven to ten fish).  Total current abundance for the watershed was about 2,000 salmon spawners (early 2000's data), compared to a historic estimate of more than 64,000 fish (Salmon Habitat Protection and Restoration Strategy for Puyallup and Chambers Watersheds, June 2018).  In combination with abundance, freshwater survival information provides an indication of productivity and overall watershed conditions.  An ideal freshwater water survival result is 10%.  

 

2018 Results:

White River Chinook of natural origin: 320 adult

Puyallup River Fall Chinook of natural origin: 1,185 adult

Puyallup River juvenile freshwater survival rate: 0.39%

FFTF GOAL(S): Increase salmon abundance
BASELINE YEAR: 2013
STATUS: Greatly reduced abundances (from historic) and exceptionally low productivity
SOURCE(S): Puyallup Tribal Fisheries Department and Washington Department of Fish and Wildlife