MORPHOMETRIC DATA

Flushing Rate (yr¹)

4,697,500

1979

1990 MESOTROPHIC

MESOTROPHIC

10.7

4

5,100

1.3Max. Depth (m):

Mean Depth (m):

Volume (m³):

Watershed Area (Ac.):

Shore Length (m):

WHITE OAK POND, HOLDERNESS, NH

TROPHIC CLASSIFICATION KNOWN EXOTIC SPECIES

Year Trophic class

Surface Area (Ac.): 291

Elevation (ft): 583

P Retention Coef: 0.66

The Waterbody Report Card tables are generated from the DRAFT 2018 305(b) report on the status of N.H. waters, and are based on data collected from 2008-

2017. Detailed waterbody assessment and report card information can be found at www.des.nh.gov/organization/divisions/water/wmb/swqa/index.htm

Volunteer Lake Assessment Program Individual Lake Reports

3,008

Designated Use Parameter Category Comments

Phosphorus (Total) GoodAquatic Life Sampling data is better than the water quality standards or thresholds for this parameter.

pH Slightly Bad Data periodically exceed water quality standards or thresholds for a given parameter by a small margin.

Oxygen, Dissolved Cautionary Limited data for this parameter predicts exceedance of water quality standards or thresholds; however more data are

necessary to fully assess the parameter.

Dissolved oxygen satura Cautionary Limited data for this parameter predicts exceedance of water quality standards or thresholds; however more data are

necessary to fully assess the parameter.

Chlorophyll-a Good Sampling data is better than the water quality standards or thresholds for this parameter.

Escherichia coli No DataPrimary Contact Recreation No data for this parameter.

Chlorophyll-a Very Good All sampling data meet water quality standards or thresholds for this parameter.

WATERSHED LAND USE SUMMARY

Fry, J., Xian, G., Jin, S., Dewitz, J., Homer, C., Yang, L., Barnes, C., Herold, N., and Wickham, J., 2011. Completion of the 2006 National Land Cover Database

for the Conterminous United States, PERS, Vol. 77(9):858-864. For larger image contact NHDES.

Land Cover Category % Cover Land Cover Category % Cover Land Cover Category % Cover

Open Water 9.79

Developed-Open Space 1.52

Developed-Low Intensity 0.14

Developed-Medium Intensity 0.04

Developed-High Intensity 0

Barren Land 0

Deciduous Forest 19.95

Evergreen Forest 13.33

Mixed Forest 42.43

Shrub-Scrub 1.26

Grassland/Herbaceous 0

Pasture Hay 0.9

Cultivated Crops 1.7

Woody Wetlands 7.71

Emergent Wetlands 1.3

This epo t as ge e ated the NHDES Volu tee Lake Assess e t P og a VLAP . Fo o e i fo aio o ta t VLAP at 0 - 8 o sa a.stei e @des. h.go

Observations Refer to Ta le 1 and Histori al Deep Spot Data Graphi s) Chlorophyll-a: Chlo oph ll le els e e slightl ele ated i ea l Jul a d de eased to lo le els i late Jul a d

August. A e age hlo oph ll le el de eased f o 0 a d as less tha the state edia a d the th eshold fo esot ophi lakes. Histo i al t e d a al sis i di ates ode atel sta le hlo oph ll le els si e o ito i g ega .

Conductivity/Chloride: Epili ei uppe ate la e , Metali ei iddle ate la e , H poli ei oto ate la e , # La S a p I let, # Du p I let, Outlet, a d # Sto e B idge I let o du i it a d/o hlo ide

le els lu tuated ithi a a e age a ge th oughout the su e . # Du p T i . a d # E Holde ess Rd. T i . o du i it a d hlo ide le els e e ele ated a d u h g eate tha the state edia s. Histo i al t e d a al sis

i di ates sig ii a tl i easi g o se i g epili ei o du i it le els si e o ito i g ega . Color: Appa e t olo as easu ed i the epili io a d i di ates po d ate is ode atel tea olo ed o o . Total Phosphorus: Epili ei , # Du p I let, Outlet, a d # Sto e B idge I let phospho us le els lu tuated ithi

a lo a ge th oughout the su e . A e age epili ei phospho us le el de eased f o 0 a d as less tha the state edia a d the th eshold fo esot ophi lakes. Histo i al t e d a al sis i di ates sig ii a tl de easi g i p o i g epili ei phospho us le els si e o ito i g ega . Metali ei phospho us le els e e sta le a d ithi a ode ate a ge. H poli ei phospho us le els e e ode ate i Jul a d i eased to a slightl ele ated

le el i August a d the tu idit of the sa ple as also ele ated. # Du p T i . Phospho us le els e e ele ated i August. # E Holde ess Rd. T i . phospho us le els e e ele ated i Jul a d de eased i August.

Transparency: T a spa e easu ed ithout the ie s ope NVS as high good i ea l Jul , de eased to a e age le els i late Jul , a d i eased i p o ed i August. A e age NVS t a spa e i eased i p o ed slightl f o 0 a d as slightl ete tha the state edia . Vie s ope t a spa e VS as ge e all highe

ete tha NVS t a spa e a d likel a ete easu e of a tual o diio s. Histo i al t e d a al sis i di ates sta le t a spa e si e o ito i g ega .

Turbidity: Epili e i , # La S a p I let, # Du p I let a d T i ., # Outlet, a d # Sto e B idge tu idit le els lu tuated ithi lo to a e age a ges fo those staio s. Metali ei tu idit as slightl ele ated i ea l Jul

he algal g o th as highe . H poli ei tu idit le els e e slightl ele ated i August. # E Holde ess Rd. T i . Tu idit le els e e ele ated i Jul a d ield data oted sedi e t i the late Jul sa ple du i g high lo s suggesi g e osio upst ea .

pH: Epili ei , # La S a p I let, # Du p I let a d T i ., # Outlet, # Sto e B idge I let, a d # E Holde ess Rd. T i . pH le els e e ithi the desi a le a ge of . —8.0 u its. Metali ei a d H poli ei pH le els e e slightl a idi a d less tha desi a le. Histo i al t e d a al sis i di ates elai el sta le epili ei pH le els si e

o ito i g ega .

Volunteer Lake Assessment Program Individual Lake Reports

White Oak Pond, Holderness

8 Data Summary

NH Media Values: Media alues fo spe ii pa a e-te s ge e ated f o histo i lake o ito i g data. Alkali it : . g/L

Chloroph ll-a: . g/

Co du ivit : . uS/

Chloride: g/L

Total Phosphorus: ug/L

Tra spare : .

pH: .

NH Water Qualit Sta dards: Nu e i ite ia fo spe-ii pa a ete s. Results e eedi g ite ia a e o sid-

e ed a ate ualit iolaio . Chloride: > 0 g/L h o i

E. oli: > 88 ts/ 00 L – pu li ea h

E. oli: > 0 ts/ 00 L – su fa e ate s

Tur idit : > 0 NTU a o e atu al le el pH: et ee . -8.0 u less atu all o u i g

Para eter Tre d E pla aio E pla aio Tre d Para eter

Chlo oph ll-a Sta le T e d ot sig ii a t; data ode atel a ia le. Data sig ii a tl i easi g. Wo se i g Co du i it

T a spa e Sta le T e d ot sig ii a t; data sho lo a ia ilit . T e d ot sig ii a t; data ode atel a ia le. Sta le pH epili io

Phospho us epili io I p o i g Data sig ii a tl de easi g.

Historical Water Quality Trend Analysis

Recommended Actions: Po d ualit as ep ese tai e of esot ophi o diio s ho e e hlo oph ll le els te d to lu tuate a o e the th eshold fo esot ophi lakes highlighi g the deli ate ala e et ee ut ie ts a d algal g o th. A a o a te ia loo o u ed i the fall esuli g i a lake a i g. The i eased f e ue a d i te sit of sto e e ts a d esuli g sto ate u of a t a spo t e ess ut ie ts the po d. Co side de elop e t of a ate shed a age e t pla t to help ide if a d

ua if ut ie t loads to the po d a d ake e o e daio s o i ple e i g est p a i es to edu e sto ate u of. Co ta t the NH DES Wate shed Assista e Se io fo o e i fo aio . Ele ated o du i it a d hlo ide le els e e o e agai ide iied i # Du p T i . a d # E Holde ess Rd. T i . i di ai g these t i uta ies a e disp opo io all o t i ui g to the hlo ide load. Edu ate ate shed eside ts o a s to edu e the appli aio of de-i i g p odu ts o tai i g sodiu hlo ide o thei

alk a s a d d i e a s a d ake su e salt sto age piles a e p ope l o e ed. E ou age oad age ts to o tai NH Volu ta Salt Appli ato Li e ses th ough UNH T Ce te ’s G ee S o P o Ce ii aio P og a . G eat o k!

Staio Na e Ta le . 0 8 A e age Wate Qualit Data fo WHITE OAK POND - HOLDERNESS

Alk. Chlo -a Chlo ide Colo Co d. Total P T a s. Tu . pH

g/l ug/l g/l p u us/ g/l tu

NVS VS

# La S a p I let 8 . 8 0. .

# Du p I let . 0. 8 .8

# Du p T i . 0 0 .0 . 0

# Outlet Da . 8 0.8 .

# Sto e B idge I let . 0. . 8

# E Holde ess Rd T i . 0 . .0 .

Epili io 8. . . 8 . 8 . 8 0. .08

Metali io . . .

H poli io 8. 8 . .